PERFORMANCE IMPROVEMENT OF OFDM BY PILOT-AIDED SPARCECHANNEL ESTIMATION

通过导频辅助空间信道估计改进 OFDM 性能

• 批准号: 22560380
• 负责人: OHNO Shuichi
• 金额: $ 2.91万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560380/
• 关键词: OFDM; 通信路推定; スパース性; パイロット信号; スパース通信路; 推定誤差; 通信路容量

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.

对于OFDM系统，基于均方信道估计误差设计导频符号的数目、位置和功率分配。所提出的方法适用于基于OFDM的认知无线电与任何空的子载波。利用非线性优化技术交叉熵优化，得到了次优的导频符号位置。导频功率分配通过求解凸优化来确定。数值仿真结果表明，该方法优于传统方法。

项目成果

Low complexity equalization for single carrier transmissions over doubly-selective channels using linear approximation

使用线性逼近的双选信道上单载波传输的低复杂度均衡

• 发表时间: 2012
• 作者: S. Ohno;E. Manasseh;and M. Nakamoto
• 通讯作者: and M. Nakamoto

Pilot symbol assisted channel estimation for OFDM-based cognitive radio systems

• DOI: 10.1186/1687-6180-2013-51
• 发表时间: 2013-03
• 期刊: EURASIP Journal on Advances in Signal Processing
• 影响因子: 1.9
• 作者: Emmanuel C. Manasseh;S. Ohno;M. Nakamoto

Low coniplexity equalization for single carrier transmissions over doubly-selective channels using linear approximation

使用线性逼近的双选信道上单载波传输的低复杂度均衡

• 发表时间: 2012
• 作者: S.Ohno;E.Manasseh;M.Nakamoto
• 通讯作者: M.Nakamoto

Low-complexity approximate LMMSE channel estimation for OFDM systems

• 发表时间: 2012-12
• 期刊: Proceedings of The 2012 Asia Pacific Signal and Information Processing Association Annual Summit and Conference
• 作者: S. Ohno;Shogo Munesada;Emmanuel C. Manasseh

Pilot design for non-contiguous spectrum usage in OFDM-based cognitive radio networks

• 发表时间: 2012-10
• 期刊: 2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO)
• 作者: Emmanuel C. Manasseh;S. Ohno;M. Nakamoto