Title :
Efficient Feedback Design for MIMO SC-FDMA Systems
Author :
Pan, Jung-Lin ; Olesen, Robert ; Grieco, Donald ; Yen, Chia-Pang
Author_Institution :
InterDigital Commun. Corp., PA
Abstract :
An efficient feedback design for single carrier frequency division multiple access (SC-FDMA) multiple input multiple output (MIMO) communication systems is described. We consider a codebook-based approach for MIMO pre-coding and quantization of feedback information. Differential processing is used to generate the updates iteratively for the feedback information between feedback instances. An approach of combined differential and non-differential feedback is considered for reduced feedback overhead and improved performance. A differential feedback with periodic error reset for differential processing is described. The performance of MIMO communication systems using pre-coding/transmit beamforming and the described feedback design is evaluated for SC-FDMA systems. The effects of pre-coding and feedback quantization, sub-carrier grouped feedback and feedback delay are investigated.
Keywords :
MIMO communication; array signal processing; feedback; frequency division multiple access; precoding; quantisation (signal); MIMO SC-FDMA systems; MIMO precoding; codebook-based approach; feedback delay; feedback design; feedback information quantization; feedback quantization; multiple input multiple output communication systems; single carrier frequency division multiple access systems; sub-carrier grouped feedback; transmit beamforming; Array signal processing; Channel state information; Delay effects; Frequency conversion; Jacobian matrices; MIMO; Matrix decomposition; Output feedback; Quantization; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.495
