상세정보
학술지
Design and Performance of Space-Time Precoder With Hybrid ARQ Transmission
- 저자
- Kan Zheng, Hang Long, Ling Wang, Wenbo Wang, 김영일
- 발행일
- 200905
- 출처
- IEEE Transactions on Vehicular Technology, v.58 no.4, pp.1816-1822
- ISSN
- 0018-9545
- 출판사
- IEEE
- 협약과제
- 09MR8100, IPTV융합서비스 고도화 지원기술 개발, 김영일
- 초록
- Multiple-input-multiple-output (MIMO) technology can efficiently increase the system capacity in rich scattering environments without increasing the bandwidth or transmission power. The precoder for MIMO transmission is a processing technique that exploits the channel state information (CSI) by operating on the signal before transmission to effectively improve link performance. A hybrid automatic repeat request (HARQ) scheme can be incorporated with the linear precoder to ensure highly reliable communication. To fully utilize the Type-I HARQ diversity gain, particularly in slow-fading channels, we propose the optimal design principle of linear precoders whose column vectors are correspondingly orthogonal to each other. In addition, the practical solution based on codebook is given in this paper. Finally, simulation results demonstrate the effectiveness of the proposed precoders in reducing the detection of bit error rate (BER) and in improving normalized throughput. © 2008 IEEE.
- KSP 제안 키워드
- Bit Error Rate(And BER), Channel State Information(CSI), Diversity gain, Hybrid ARQ, Hybrid automatic repeat request(HARQ), Linear precoders, Link Performance, MIMO transmission, Multiple input multiple output(MIMO), Normalized Throughput, Processing technique