Quality of Service White Papers

Adaptive Nonuniform Phase-Shift-Key Modulation for Multimedia Traffic in Wireless Networks

Overview The characteristics of mobile wireless communication channels fluctuate for many reasons, including movement of the radios, changes in path attenuation, and variations in interference. Several adaptive signaling techniques have been proposed for use in wideband Code-Division Multiple-Access (CDMA) systems including adaptive data rates, adaptive spreading code rates, discontinuous transmission, and multicode CDMA. This paper introduces adaptive signaling techniques that use nonuniform Phase-Shift-Key (PSK) modulation. These techniques have several advantages for use in CDMA communications, and they support multimedia transmission by simultaneously delivering different types of traffic, each with its own required quality of service.

Further White Paper Details
PublisherInstitute of Electrical and Electronics Engineers File FormatPDF
Date PublishedAugust 2000
FormatWhite Papers   
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