CDMA Signature Sequences With Low Peak-To-Average Ratio Via Alternating Minimization

Authors:

J. A. Tropp, I. Dhillon, R. W. Heath, Jr., and T. Strohmer

Reference:

Proc. of IEEE Asilomar Conf. on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 9-12, 2003.

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.


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