OFDM_SYSTEMS

作品数：132被引量：158H指数：6
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Compressed sensing based channel estimation using group random unit pilot for OFDM systems in fast moving environment~被引量：1
《High Technology Letters》2011年第2期113-118,共6页方勇 Zhou Xiaoping Wang Min 
Supported by the National Natural Science Foundation of China （ No. 60972056 ）, the Innovation Foundation of Shanghai Education Committee （ No. 09ZZ89） and Shanghai Leading Academic Discipline Project and STCSM （ No.S30108, 08DZ2231100 ）.
A compressed sensing （CS） based channel estimation algorithm is proposed in the fast moving environment. A sparse basis expansion channel model in both time and frequency domain is given.Pilots are placed according ...
关键词：compressed sensing （ CS） channel estimation fast fading sparse channel basis expansion 
A novel transmit scheme for OFDM systems with virtual subcarriers
《High Technology Letters》2008年第3期232-237,共6页陈翔 
the National High Technology Research and Development Program of China(No.2006AA01Z274).
Based on the double repetition structure in the frequency domain and the proper pulse shaping filter in the time domain, a novel transmit scheme for orthogonal frequency division multiplexing （OFDM） systems with vir...
关键词：OFDM channel estimation comb-type pilots virtual subcarriers 
Blind channel estimation through redundant linear precoding for OFDM systems
《High Technology Letters》2007年第2期150-154,共5页梁永明 Luo Hanwen Wu Yadong Huang Jianguo 
Sponsored by the National Natural Science Foundation of China （No.60572157）, the High Technology Research and Development Program of China （No.2003AA123310） and Sharp Electronics（Shanghai） Co., Ltd.
A novel approach of blind channel estimation through redundant linear precoding for orthogonal fre-quency-division multiplexing （OFDM） is proposed. A redundant linear frequency-domain preceder is ap-plied to each pa...
关键词：OFDM blind channel estimation redundant linear precoding auto-correlation SVD 
Efficient integer frequency offset estimation for OFDM systems被引量：2
《High Technology Letters》2007年第2期164-168,共5页吴贇 Ding Ming Luo Hanwen Huang Jianguo Liu Renmao 
An efficient scheme of integer frequency offset estimate for orthogonal frequency division multiplexing （OFDM） systems is proposed based on a training symbol with several identicalparts. In this scheme, the received...
关键词：OFDM ESTIMATION integer carrier frequency offset FFT 
Carrier synchronization for STBC OFDM systems
《High Technology Letters》2005年第1期30-34,共5页CaiJueping SongWentao LiZan GeJianhua 
国家高技术研究发展计划(863计划)，国家自然科学基金
All-digital carrier synchronization strategies and algorithms for space-time block coding (STBC) orthogonal frequency division multiplexing (OFDM) are proposed in this paper. In our scheme, the continuous pilots (CP) ...
关键词：传输效率 STBC系统 OFDM系统 载波 频率 数字技术 无线通信技术 
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