상세정보
학술지
Performance Analysis of Coordinated Random Beamforming Technique in Multi-Cell Environments
Cited - time in 
Download 0 time
Share 
Download 0 time
Share
- 저자
- 이종민, 정방철
- 발행일
- 201008
- 출처
- Journal of Information and Communication Convergence Engineering, v.8 no.4, pp.393-398
- ISSN
- 2234-8255
- 출판사
- 한국정보통신학회
- 협약과제
- 10MI1200, 차세대 이동통신 서비스 플랫폼 연구, 김영진
- 초록
- For multi-cell environments, coordinated random beamforming technique in multiuser MIMO (multiple-input multiple-output) broadcast channel is considered. In order to mitigate severe interference at receivers, the multi-cell environments might require complex transmitter and receiver design because the scheduler decision based on full channel state information (CSI) in one cell must be intertwined with decision made by other cells’ CSI. With limited CSI, however, this paper considers a scheme of randomizing transmitters’ beamforming but being coordinated with other cell transmitters. The transmitters in each cell share random beamforming patterns and schedule data transmission within coherent scheduling period. The co-randomized beams allow the users to be selected with the highest SINRs even in multi-cell environments. We analyze the performance of the proposed scheme. And numerical results show that the scheme achieves better performance than the conventional random beamforming when applying to multi-cell environments.
- KSP 제안 키워드
- Beamforming technique, Broadcast Channel, Channel State Information(CSI), Coherent scheduling, Data transmission, Multi-cell, Multiple input multiple output(MIMO), Numerical results, Performance analysis, Random Beamforming, Transmitter and receiver