상세정보
학술대회
Joint Spatial Division and Multiplexing - Benefits of Antenna Correlation in Multi-User MIMO
- 발행일
- 201307
- 출처
- International Symposium on Information Theory (ISIT) 2013, pp.619-623
- 협약과제
- 13VI1400, 스마트 모바일 서비스를 위한 B4G 이동통신 기술 개발, 송평중
- 초록
- We show that the sum capacity of 'spatially well-correlated' Gaussian MIMO broadcast channel (BC) is rather larger than that of the uncorrelated (i.i.d. Rayleigh fading) Gaussian MIMO BC, assuming a special structure of transmit correlation of users. Moreover, a potential sum-rate gap of an ideal correlated Rayleigh fading channel is shown to be M log M over the uncorrelated case, where M is the number of transmit antennas. Finally, we propose a joint spatial division and multiplexing (JSDM) scheme based on opportunistic beamforming that can achieve the optimal multiuser diversity gain with very limited channel state information (CSI) feedback in realistic scenarios, not requiring the special structure of transmit correlation. © 2013 IEEE.
- KSP 제안 키워드
- Antenna Correlation, Channel State Information(CSI), Correlated Rayleigh Fading Channel, Diversity gain, Limited channel, MIMO broadcast channel, Multiuser diversity, Opportunistic beamforming, Special structure, Sum Capacity, Sum rate