High speed data transmission using expanded bit durations in multiple parallel coded data streams
|Authors||Ben Letaief, Khaled
Chuang, Justin C.
Murch, Ross David
|Source||US Patent , 5,960,032. Washington, DC: US Patent and Trademark Office, 1999.|
|Summary||High-rate bit transmitted data is serial to parallel converted into low-rate bit streams in a similar fashion to multicarrier or multitone modulation. However, in contrast to the multicarrier method, each low-rate bit stream is modulated using direct-sequence spread-spectrum. By selecting the processing gain properly the total required bandwidth will be of the same order as the original high-rate data stream, thereby gaining the inherent benefit or multipath rejection without expanding the bandwidth of the original high-rate stream.|
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