On acquisition of wideband direct-sequence spread spectrum signals
作者： I. Ramachandran , S. Roy
关键词: Spread spectrum 、 Wideband 、 Direct-sequence spread spectrum 、 Frequency modulation 、 Computer network 、 Multipath propagation 、 Modulation 、 Ultra-wideband 、 Computer science 、 Fading 、 Communication channel 、 Code division multiple access 、 Overhead (computing) 、 Throughput 、 Electronic engineering
摘要: Very high rate packet data systems such as those based on wideband spread-spectrum (SS) signaling face an important challenge - achieving fast and reliable acquisition to minimize preamble overhead optimize throughput. Such modulation schemes undergo frequency selective fading, implying a very large number of resolved multipath components. Thus, the conventional analyses serial search simplifying assumptions that are valid in narrow(er) band (and invalid for sufficiently systems) need be revamped. Also, there is devise new exploit presence components faster over simple search. Our work provides novel contributions both these aspects: we analyze random compare their performances several environments. It shown many typical indoor channels, offers significantly lower mean times
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