| Project/Area Number |
25889004
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Communication/Network engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2013-08-30 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | resource allocation / fairness / 5G / uplink / scheduling / SC-FDMA / Uplink |
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| Outline of Final Research Achievements |
We studied the user scheduling and resource block (RB) allocation problem in uplink single input multiple output (SIMO) single carrier frequency division multiple access (SC-FDMA) system. An analytic model for SIMO SC-FDMA system signal processing was first presented. In order to design a low complexity algorithm for user scheduling, we first showed the relationship between the user's received array correlation and the uplink SIMO SC-FDMA system spectral efficiency (SE). Our results show that the proposed scheduling technique improves the total SE for about 10% when an optimum number of 8 RBs is considered with 18 users in the system. Moreover, we proposed similar algorithm which is capable of controlling the system fairness as well. Finally, we further developed our model for the case of imperfect channel state information (CSI) by introducing a pilot signal structure. Simulation results show that our a algorithm improves the SE considerably, even under imperfect CSI conditions.
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