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Published May 4, 2004 | public
Book Section - Chapter Open

CDMA signature sequences with low peak-to-average-power ratio via alternating projection

Abstract

Several algorithms have been proposed to construct optimal signature sequences that maximize the sum capacity of the uplink in a direct-spread synchronous code division multiple access (CDMA) system. These algorithms produce signatures with real-valued or complex-valued entries that generally have a large peak-to-average power ratio (PAR). This paper presents an alternating projection algorithm that can design optimal signature sequences that satisfy PAR side constraints. This algorithm converges to a fixed point, and these fixed points are partially characterized.

Additional Information

© Copyright 2003 IEEE. Reprinted with permission. [Posted online: 2004-05-04] I. S. Dhillon acknowledges support by NSF CAREER Award No. ACI-0093404, T. Strohmer acknowledges partial support by NSF grant DMS 0208568, and R. Heath acknowledges support from the Texas Advanced Technology Program under Grant No. 003658-0614-2001, the Samsung Advanced Institute of Technology, and the National Instruments Foundation.

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