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Performance evaluation of multimedia mobile communication networks based on chip-level traffic volume

Research Project

Project/Area Number 14580470
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 社会システム工学
Research InstitutionGUNMA UNIVERSITY

Principal Investigator

ONOZATO Yoshikuni  Gunma University, Department of Computer Science, Professor, 工学部, 教授 (10143710)

Co-Investigator(Kenkyū-buntansha) KAWANISHI Kenichi  Gunma University, Department of Computer Science, Assistant, 工学部, 助手 (50334131)
YAMAMOTO Ushio  Gunma University, Department of Computer Science, Lecture, 工学部, 講師 (00292623)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 2003: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2002: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsHierarchical Network / Outage Probability / Channel Capacity / Mobility / Paging / Mobile IP / PS / CDMA / Fading / 送信電力制御 / アンテナビーム制御 / マイクロセル / マクロセル / トレードオフ / OVSF / CCA / DCA / Code Blocking / データレート / 階層型CDMA
Research Abstract

We proposed a dynamic reassignment scheme of spreading codes for DS-CDMA systems so called RDA (Region Division Assignment) by reconstructing the code tree to mitigate the code blocking problem in order to efficiently provide the services for all supported rates. We compare the performance of the RDA with the conventional OVSF-code assignment scheme (CONV), and the dynamic OVSF-code assignment scheme (DCA). The computer simulation results show that the blocking probability of RDA is lower than that of DCA under the heavy traffic condition. The simulation results also show that the calculation time of DCA is significantly larger than that of RDA. Furthermore, RDA is shown to be able to simultaneously handle much more voice sources than DCA.
The co-existence of TDMA and W-CDMA spectrum sharing system (TDMA/W-CDMA overlaid system) with cellular architecture is discussed. In this system, both systems share the same frequency band to improve the spectrum efficiency. BER and spectrum efficiency of the system are calculated for the forward link (down-link) in the presence of AWGN channel. Taking into account the path loss and shadow fading loss, W-CDMA applying interference cancellation (IC) shows a substantial difference in spectrum efficiency than a single multiple access-based system such as TDMA system or W-CDMA system. The interference cancellation can significantly improve BER of the spectrum overlaid system.
We investigate the validity of the analytical model of new call channel limiting scheme (NCCL) by means of simulation. NCCL limits new calls to access the total channels with parameter α while handover calls have no restriction to access the channels. We focus on the effects of users' mobility and the parameter α on the blocking probabilities of new and handover good match to the simulation model for low mobility users.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (61 results)

All Other

All Publications (61 results)

  • [Publications] J.Zhou, Y.Onozato, H.Kikuchi: "Distribution of ISR and Its Optimization in Performance Evaluation of Forward Link in Cellular Mobile Radio Systems"IEICE Transactions on Communications. Vol.E85-B, No.8. 1479-1489 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Forward Link Performance of TDMA/W-CDMA Spectrum Overlaid System with Interference Cancellation for Future Wireless Communications"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E85-A, No.7. 1536-1545 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance Investigation of Two Transmit Diversity Schemes with Perfect/Imperfect Channel Evaluation in Wireless Communications"IEICE Transactions on Communications. Vol.E85-B, No.10. 1957-1965 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Assarut, M.G.Husada, U.Yamamoto, Y.Onozato: "Data rate improvement with dynamicre assignment of spreading codes for DS-CDMA"Computer Communications. Vol.25, Issue 17. 1575-1583 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Assarut, K.Kawanishi, R.Deshpande, U.Yamamoto, Y.Onozato: "Performance Evaluation of Orthogonal Variable-Spreading-Factor code Assignment Schemes in W-CDMA"2002 IEEE International Conference on Communications (ICC2002), 28 April-2 May, New York, NY, U.S.A.. 3050-3054 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Assarut, K.Kawanishi, U.Yamamoto, Y.Onozato: "Performance Evaluation of Orthogonal Variable-Spreading-Factor Code Assignment Schemes Based on UMTS/IMT-2000 in W-CDMA"2002 IEEE 56th Vehicular Technology Conference (VTC2002-Fall), 24-28 September, Vancouver, British Columbia, Canada, Session66 : GDS/UMTS/EDGE6. No.1(CD-ROM). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Kikuchi, J.Zhou, S.Sasaki, S.Muramatsu, Y.Onozato: "Spectrum Efficiency of a TDMA /W-CDMA Frequency Sharing System with Notch Filters and Signal Clippers"Proc.IEEE International Conference of Communications, Circuits and Systems (ICCCAS2002), IEEE Catalog Number:02EX591, Vol.1, Chengdu, China, July. Number:02EX591, Vol.1. 192-196 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance of CDMA Cellular System with Effects of Soft Handover Under Log-Normal Shadowing Channels"Proc.IEEE International Conference of Communications, Circuits and Systems (ICCCAS2002),IEEE Catalog Number.02EX591, Chengdu, China, July. Number.02EX591, Vol.1. 332-336 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Arakawa, K.Kawanishi, Y.Onozato, R.Deshpande: "Cost Analysis of a Location Management Strategy with Commonly Visited Sites in PCS Networks"The 5th International Symposium on Wireless Personal Multimedia Communications (WPMC'02), October 27-30, Sheraton Waikiki, Honolulu, Hawaii. 1395-1399 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Thipchaksurat, K.Kawanishi, U.Yamamoto, Y.Onozato: "Impact of Mobility on Blocking in One-dimensional Cellular Networks with New Call Channel Limiting Scheme"IEEE Global Telecommunications Conference(GLOBECOM2002), November 17-21, Taipei, Taiwan, GEN-02-3 Mobility and Session Management(II). (CD-ROM). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Performance Analysis of a DS-CDMA Cellular System with Cell Splitting into Macrocell and Microcell Architecture"IEICE Transactions on Communications. Vol.E86-B, No.6. 1967-1977 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Spatial Correlation Functions for a Circular Antenna Array and Their Applications in Wireless Communication Systems"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E86-A, No.7. 1716-1723 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, H.Kikuchi, Y.Onozato: "Cell Boundary Shifting with Power Ratio Controland Tilted Antenna Arrays in a Cellular Wireless Communications"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E86-A, No.10. 2607-2614 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Deshpande, N.Yoshiura, R.Nakanishi, Y.Onozato: "Performance of live and interactive video in Distance Education"25^<th> Annual Conference, Pacific Telecommunications Council (PTC2003), January 19-23, Hilton Hawaiian Village Honolulu, Hawaii, U.S.A.. Collaborative Applications T.1.2.1. (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, H.Kikuchi, Y.Onozato: "Optimum Cell Boundary with Power Ratio Control and Tilted Antenna Arrays in a Cellular Wireless Communications"Proceedings of the workshop WiOpt'03, Modeling and Optimization in Mobile Ad Hoc and Wireless Networks, March 3-5, INRIA Sophia Antipolis, France. 347-348 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Sekine, K.Kawanishi, U.Yamamoto, Y.Onozato: "Hybrid OVSF code assignment scheme in W-CDMA"2003 IEEE Pacific Rim Conference on Communications, Commputers adn Signal Processing(PACRIM'03), August28-30, Victoria, BC, Canada. 384-387 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance Analysis of Diversity Reception Schemes with STD In Correlated Rayleigh Fading Channels"International Conference on Communication Technology (ICCT2003), April 9-11, Beijing, China. (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Inoue, L.Yishu, K.Kawanishi, Y.Onozato: "Location-Velocity mobility model for wireless networks"5th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT2003), November 25-26, Noumea, New Caledonia. 105-110 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Spatial Correlation for a Circular Antenna Array and Its Applications in Wireless Communications"IEEE Global Telecommunications Conference(GLOBECOM'03), 1-5 December, SanFrancisco, CA, USA, Session WC28-5. 1108-1113 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, K.Ishizawa, H.Kikuchi, M.Sengoku, Y.Onozato: "Generalized Spatial Correlation Equations for Antenna Arrays in Wireless Diversity Reception Exact and Approximate Analyses"IEEE Int.Conf.Neural Networks & Signal Processing, 14-17 December, Nanjing, China. Vol.1. 180-184 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, Y.Onozato, H.Kikuchi: "Distribution of ISR and Its Optimization in Performance Evaluation of Forward Link in Cellular Mobile Radio Systems"IEICE Transactions on Communications. Vol.E85-B, No.8, August. 1479-1489 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Forward Link Performance of TDMA/W-CDMA Spectrum Overlaid System with Interference Cancellation for Future Wireless Communications"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E85-A, No.7, July. 1536-1545 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance Investigation of Two Transmit Diversity Schemes with Perfect/Imperfect Channel Evaluation in Wireless Communications"IEICE Transactions on Communications. Vol.E85-B, No.10, October. 1957-1965 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Assarut, M.G.Husada, U.Yamamoto, Y.Onozato: "Data rate improvement with dynamicre assignment of spreading codes for DS-CDMA"Computer Communications. Vol.25, Issue17. 1575-1583 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Assarut, K.Kawanishi, R.Deshpande, U.Yamamoto, Y.Onozato: "Performance Evaluation of Orthogonal Variable-Spreading-Factor code Assignment Schemes in W-CDMA"2002 IEEE International Conference on Communications (ICC2002), 28 April-2 May, New York, NY, U.S.A.. 3050-3054 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Assarut, K.Kawanishi, U.Yamamoto, Y.Onozato: "Performance Evaluation of Orthogonal Variable-Spreading-Factor Code Assignment Schemes Based on UMTS/IMT-2000 in W-CDMA"2002 IEEE 56th Vehicular Technology Conference (VTC2002-Fall), 24-28 September, Vancouver, British Columbia, Canada. Session66:GDS/UMTS/EDGE6,No.1(CD-ROM). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Kikuchi, J.Zhou, S.Sasaki, S.Muramatsu, Y.Onozato: "Spectrum Efficiency of a TDMA /W-CDMA Frequency Sharing System with Notch Filters and Signal Clippers"Proc.IEEE International Conference of Communications, Circuits and Systems (ICCCAS2002), Chengdu, China, July. IEEE Catlog Number: 02EX591, Vol.1. 192-196 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance of CDMA Cellular System with Effects of Soft Handover Under Log-Normal Shadowing Channels"Proc.IEEE International Conference of Communications, Circuits and Systems (ICCCAS2002), Chengdu, China, July. IEEE Catlog Number: 02EX591, Vol.1. 332-336 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Arakawa, K.Kawanishi, Y.Onozato, R.Deshpande: "Cost Analysis of a Location Management Strategy with Commonly Visited Sites in PCS Networks"The 5th International Symposium on Wireless Personal Multimedia Communications (WPMC'02), October 27-30, Sheraton Waikiki, Honolulu, Hawaii. 1395-1399 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Thipchaksurat, K.Kawanishi, U.Yamamoto, Y.Onozato: "Impact of Mobility on Blocking in One-dimensional Cellular Networks with New Call Channel Limiting Scheme"IEEE Global Telecommunications Conference (GLOBECOM2002), November 17-21, Taipei, Taiwan, GEN-02-3 Mobility and Session Management (II). (CD-ROM). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Performance Analysis of a DS-CDMA Cellular System with Cell Splitting into Macrocell and Microcell Architecture"IEICE Transactions on Communications. Vol.E86-B, No.6, June. 1967-1977 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Spatial Correlation Functions for a Circular Antenna Array and Their Applications in Wireless Communication Systems"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E86-A, No.7, July. 1716-1723 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, H.Kikuchi, Y.Onozato: "Cell Boundary Shifting with Power Ratio Control and Tilted Antenna Arrays in a Cellular Wireless Communications"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E86-A, No.10, October. 2607-2614 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Deshpande, N.Yoshiura, R.Nakanishi, Y.Onozato: "Performance of live and interactive video in Distance Education"25^<th> Annual Conference, Pacific Telecommunications Council (PTC2003), January 19-23, Hilton Hawaiian Village Honolulu, Hawaii, U.S.A., Collaborative Applications T.1.2.1. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, H.Kikuchi, Y.Onozato: "Optimum Cell Boundary with Power Ratio Control and Tilted Antenna Arrays in a Cellular Wireless Communications"Proceedings of the Workshop WiOpt'03, Modeling and Optimization in Mobile Ad Hoc and Wireless Networks, March 3-5, INRIA Sophia Antipolis, France. 347-348 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Sekine, K.Kawanishi, U.Yamamoto, Y.Onozato: "Hybrid OVSF code assignment scheme in W-CDMA"2003 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM'03), August 28-30, Victoria, BC, Canada. 384-387 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance Analysis of Diversity Reception Schemes with STD In Correlated Rayleigh Fading Channels"International Conference on Communication Technology (ICCT 2003), April 9-11, Beijing, China. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Inoue, L.Yishu, K.Kawanishi, Y.Onozato: "Location-Velocity mobility model for wireless networks"5th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT2003), November 25-26, Noumea, New Caledonia. 105-110 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, S.Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Spatial Correlation for a Circular Antenna Array and Its Applications in Wireless Communications"IEEE Global Telecommunications Conference (GLOBECOM'03), 1-5 December, SanFrancisco, CA, USA. Session WC28-5. 1108-1113 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, K.Ishizawa, H.Kikuchi, M.Sengoku, Y.Onozato: "Generalized Spatial Correlation Equations for Antenna Arrays in Wireless Diversity Reception Exact and Approximate Analyses"IEEE Int.Conf.Neural Networks & Signal Processing, 14-17 December, Nanjing, China. Vol.1. 180-184 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] J.Zhou, Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Performance Analysis of a DS-CDMA Cellular System with Cell Splitting into Macrocell and Microcell Architecture"IEICE Transactions on Communications. Vol.E86-B, No.6. 1967-1977 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, Sasaki, S.Muramatsu, H.Kikuchi, Y.Onozato: "Spatial Correlation Functions for a Circular Antenna Array and Their Applications in Wireless Communication Systems"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E86-A, No.7. 1716-1723 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, S.Sasaki, H.Kikuchi, Y.Onozato: "Cell Boundary Shifting with Power Ratio Controland Tilted Antenna Arrays in a Cellular Wireless Communications"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E86-A, No.10. 2607-2614 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] R.Deshpande, N.Yoshiura, R.Nakanishi, Y.Onozato: "Performance of live and interactive video in Distance Education"25^<th> Annual Conference, Pacific Telecommunications Council (PTC2003),January 19-23, Hilton Hawaiian Village Honolulu, Hawaii, U.S.A.. Collaborative Applications T.1.2.1. (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, S.Sasaki, H.Kikuchi, Y.Onozato: "Optimum Cell Boundary with Power Ratio Control and Tilted Antenna Arrays in a Cellular Wireless Communications"Proceedings of the workshop WiOpt'03, Modeling and Optimization in Mobile Ad Hoc and Wireless Networks, March 3-5, INRIA Sophia Antipolis, France. 347-348 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Sekine, K.Kawanishi, U.Yamamoto, Y.Onozato: "Hybrid OVSF code assignment scheme in W-CDMA"2003 IEEE Pacific Rim Conference on Communications, Computers adn Signal Processing(PACKIM'03), August 28-30, Victoria, BC, Canada. 384-387 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance Analysis of Diversity Reception Schemes with STD In Correlated Rayleigh Fading Channels"International Conference on Communication Technology (ICCT 2003), April 9-11, Beijing, China. (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Inoue, L.Yishu, K.Kawanishi, Y.Onozato: "Location-Velocity mobility model for wireless networks"5th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT2003), November 25-26, Noumea, New Caledonia. 105-110 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, S.Sasaki.S.Muramatsu, H.Kikuchi, Y.Onozato: "Spatial Correlation for a Circular antenna Array and Its Applications in Wireless Communications"IEEE Global Telecommunications Conference(GLOBECOM'03)1-5 December, SanFrancisco, CA, USA, Session WC28-5. 1108-1113 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, K.Ishizawa, H.Kikuchi, M.Sengoku, Y.Onozato: "Generalized Spatial Correlation Equations for Antenna Arrays in Wireless Diversity Reception Exact and Approximate Analyses"IEEE Int.Conf.Neural Networks & Signal Processing, 14-17 December, Nanjing, China. Vol.1. 180-184 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.Zhou, Y.Onozato, H.Kikuchi: "Distribution of ISR and Its Optimization in Performance Evaluation of Forward Link in Cellular Mobile Radio Systems"IEICE Transactions on Communications. Vol.E85-B,8. 1479-1489 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Zhou, H.kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Forward Link Performance of TDMA/W-CDMA Spectrum Overlaid System with Interference Cancellation for Future Wireless Communications"IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. Vol.E85-A,7. 1536-1545 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Zhou, H.kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance Investigation of Two Transmit Diversity Schemes with Perfect/Imperfect Channel Evaluation in Wireless Communications"IEICE Transactions on Communications. Vol.E85-B,10. 1957-1965 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Assarut, M.G.Husada, U.Yamamoto, Y.Onozato: "Data rate improvement with dynamic reassignment of spreading codes for DS-CDMA"Computer Communications. Vol.25,Issue 17. 1575-1583 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Assarut, K.Kawanishi, R.Deshpande, U.Yamamoto, Y.Onozato: "Performance Evaluation of Orthogonal Variable-Spreading-Factor code Assignment Schemes in W-CDMA"2002 IEEE International Conference on Communications (ICC2002), 28 April-2 May, New York, NY U.S.A.. 3050-3054 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Assarut, K.Kawanishi, U.Yamamoto, Y.Onozato: "Performance Evaluation of Orthogonal Variable-Spreading-Facyor Code Assignment Schemes Based on UMTS/IMT-2000 in W-CDMA"2002 IEEE 56th Vehicular Technology Conference(VTC2002-Fall), 24-28 September, Vancouver, British Columbia, Canada, Session66 : GDS/UMTS/EDGE6. No.1(CD-ROM). (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Kikuchi, J.Zhou, S.Sasaki, S.Muramatsu, Y.Onozato: "Spectrum Efficiency of a TDMA/W-CDMA Frequency Sharing System with Notch Filters and Signal Clippers"Proc. IEEE International Conference of Communications, Circuits and Systems (ICCCAS'2002), IEEE Catlog Number : 02EX591 Chengdu, China, July. Vol.1. 192-196 (2002)

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      2002 Annual Research Report
  • [Publications] J.Zhou, H.Kikuchi, S.Sasaki, S.Muramatsu, Y.Onozato: "Performance of CDMA Cellular System with Effects of Soft Handover Under Log-Normal Shadowing Channels"Proc. IEEE International Conference of Communications, Circuits and Systems (ICCCAS'2002), IEEE Catlog Number : 02EX591 Chengdu, China, July. Vol.1. 332-336 (2002)

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      2002 Annual Research Report
  • [Publications] T.Arakawa, K.Kawanishi, Y.Onozato, R.Deshpande: "Cost Analysis of a Location Management Strategy with Commonly Visited Sites in PCS Networks"The 5th International Symposium on Wireless Personal Multimedia Communicaions(WPMC'02), October 27-30, Sheraton Waikiki, Honolulu, Hawaii. 1395-1399 (2002)

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      2002 Annual Research Report
  • [Publications] S.Thipchaksurat, K.Kawanishi, U.Yamamoto, Y.Onozato: "Impact of Mobility on Blocking in One-dimensional Cellular Networks with New Call Channel Limiting Scheme"IEEE Global Telecommunications Conference(GLOBECOM2002), November17-21, Taipei, Taiwan, GEN-02-3 Mobility and Session Management(II). (CD-ROM). (2002)

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      2002 Annual Research Report
  • [Publications] R.Deshpande, N.Yoshiura, R.Nakanishi, Y.Onozato: "Performance of live and interactive video in Distance Education"25th Annual Conference, Pacific Telecommunications Council(PTC2003), January 19-23, Hilton Hawaiian Village Honolulu, Hawaii, U.S.A., Collaborative Applications T.1.2.1. (2003)

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      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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