Title :
Analytical Assessment of Capacity Vs. Robustness Trade-Offs in Systems with Selective Multi-User Diversity
Author :
Vicario, José López ; Anton-Haro, Carles
Author_Institution :
Centre Tecnologic de Telecomunicacions de Catalunya
Abstract :
In this paper, we explore spatial vs. multi-user diversity tradeoffs in a cellular system with selective feedback. We first derive closed-form expressions of the average system capacity for both SISO and STBC transmission schemes in order to analytically assess the impact of the number of terminals and bandwidth restrictions in the feedback channel. Next, we analyze several design trade-offs in terms of increased average (long term) system capacity vs. robustness to short-term SNR fluctuations for both transmission schemes under consideration
Keywords :
bandwidth allocation; block codes; cellular radio; channel coding; diversity reception; space-time codes; SISO; SNR; STBC transmission schemes; average system capacity; bandwidth restrictions; cellular system; feedback channel; selective feedback; selective multiuser diversity; AWGN; Antenna feeds; Bandwidth; Base stations; Closed-form solution; Fading; Feedback; Fluctuations; NIST; Robustness;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661023
