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Theoretical Study of Site Selection Diversity Transmission in DS-CDMA Cellular Mobile Radio

Mahbub ALAM, Eisuke KUDOH, Fumiyuki ADACHI

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Summary :

Single cell reuse of the same frequency, which is possible in DS-CDMA cellular systems, yields the option of site diversity to increase link capacity. In this letter, a generalized case of site diversity transmission is considered where multiple base stations (BS's) are involved in weighted transmissions with constant total transmit power to a target mobile station (MS). A general equation of conditional bit error rate (BER) is derived based on the model of weighted transmissions combined with antenna diversity reception and rake combining. It turns out theoretically that the optimum set of weights to maximize forward link capacity makes site selection diversity transmission (SSDT) the best performer. This theoretical analysis is confirmed by performance evaluation based on the Monte-Carlo simulation.

Publication
IEICE TRANSACTIONS on Communications Vol.E88-B No.5 pp.2202-2206
Publication Date
2005/05/01
Publicized
Online ISSN
DOI
10.1093/ietcom/e88-b.5.2202
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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