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

Volume

4

fYear

2006

fDate

14-19 May 2006

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1661023

Filename

1661023