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PAPR reduction by combining selected mapping and selected spreading code in MC-CDMA systems

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4 Author(s)
S. Ruangsuthinarupap ; Telecommun. Program, Asian Inst. of Technol., Thailand ; K. M. Ahmed ; W. A. C. Fernando ; M. E. R. Khan

MC-CDMA is currently being investigated by many researchers as a promising candidate for future generations of wireless systems due to robustness to frequency selective fading, high spectral efficiency, and higher flexibility. However, the main drawback is the high peak to average power ratio (PAPR). In this paper, a method has been proposed to reduce PAPR in synchronous downlink MC-CDMA through signal mapping and code selection. Simulation results show that PAPR can be reduced significantly proportional to an increase of the number of different phase sequences.

Published in:

Computers and Communications, 2004. Proceedings. ISCC 2004. Ninth International Symposium on  (Volume:2 )

Date of Conference:

28 June-1 July 2004