2012 Fiscal Year Final Research Report
PERFORMANCE IMPROVEMENT OF OFDM BY PILOT-AIDED SPARCECHANNEL ESTIMATION
| Project/Area Number |
22560380
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Hiroshima University |
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Principal Investigator |
OHNO Shuichi 広島大学, 工学研究院, 准教授 (70273919)
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| Project Period (FY) |
2010 – 2012
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| Keywords | OFDM / 通信路推定 / スパース性 / パイロット信号 |
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| Research Abstract |
For OFDM systems, number, location, and power distribution of pilot symbols are designed based on mean squared channel estimation error. The proposed method is applicable to OFDM-based cognitive radio with any null subcarriers. The sub-optimal location of pilot symbols is given by using cross entropy optimization that is a non-linear optimization technique. Pilot power distribution is determined by solving a convex optimization. Numerical simulations show that the proposed method outperformsthe conventional method.
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Research Products
(6 results)
