Abstract
In this paper, multi-h continuous-phase modulation (CPM) is combined with a direct-sequence spread spectrum system and the performance is assessed in a multipath channel in the presence of multi-user interference. An analytical model for the evaluation of spread spectrum multi-h (SSMH) in a Rayleigh indoor channel with multi-user interference is presented. This study is performed considering a coherent receiver structure which is optimum for AWGN. Also the use of diversity techniques is inspected in order to obtain improved performance in the receiver. Three different types of diversity are considered: selection diversity, equal gain combining and maximal ratio combining.
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