A reduced-complexity RAKE receiver structure for high-speed indoor wireless communications

TitleA reduced-complexity RAKE receiver structure for high-speed indoor wireless communications
Publication TypeConference Paper
Year of Publication1998
AuthorsAnnamalai, A., and V. K. Bhargava
Conference NameGlobal Telecommunications Conference, 1998. GLOBECOM 98. The Bridge to Global Integration. IEEE
Pagination253 -258 vol.1
Keywordsaverage bit error rate performance, channel fading estimation, combiner weighting factors, diversity reception, error statistics, fading channels, fading parameters, Gaussian error, high signalling rates, high-speed indoor wireless communications, inaccurate channel estimation, indoor radio, land mobile radio, low-complexity receiver architecture, maximal-ratio diversity combiner, maximum amplitude selection diversity, mobile link, MRC diversity, Nakagami multipath fading channels, parameter estimation, radio receivers, rak, reduced-complexity RAKE receiver, signal strengths

A general expression is derived to quantify the average bit error rate performance of a maximum amplitude selection diversity (MA/SD) RAKE receiver over Nakagami multipath fading channels. This includes all possible conditions of signal strengths and arbitrary fading parameters. This low-complexity receiver architecture is practically appealing because of its simplicity as well as its ability to operate effectively even at high signalling rates. While the maximal-ratio diversity (MRC) combiner with perfect channel fading estimation outperforms the proposed MA/SD scheme, the latter yields superior performance when inaccurate channel estimation is considered (i.e., with Gaussian error in the combiner weighting factors). An alternative simple expression for rapid evaluation of MRC diversity performance in a Nakagami fading channel with arbitrary parameters is also presented


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