Title :
Crest factor considerations in MC-CDMA with carrier interferometry codes
Author :
Natarajan, Balasubramaniam ; Nassar, Carl R.
Author_Institution :
Colorado State Univ., Fort Collins, CO, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
Carrier interferometry codes, applied to N-carrier MC-CDMA systems, enable 2N users to simultaneously share the system bandwidth with minimal degradation in performance (relative to the N orthogonal user case). This paper presents an analysis of crest factor considerations in MC-CDMA systems employing carrier interferometry codes. First, it is shown that the crest factor in downlink transmission demonstrates the desirable properties of low mean and low variance. Next, the poor crest factor observed in the uplink is characterized and it is shown how this can be effectively combated by use of Schroeder´s (1970) analytical crest factor reduction techniques
Keywords :
code division multiple access; codes; land mobile radio; multiuser channels; radio links; radiowave interferometry; MC-CDMA; bandwidth sharing; carrier interferometry codes; crest factor reduction techniques; downlink transmission; low mean; low variance; mobile wireless communications; multi-carrier code division multiple access; uplink; Bandwidth; Downlink; Dynamic range; Error correction; Error correction codes; High power amplifiers; Interferometry; Multiaccess communication; Multicarrier code division multiple access; Peak to average power ratio;
Conference_Titel :
Communications, Computers and signal Processing, 2001. PACRIM. 2001 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-7080-5
DOI :
10.1109/PACRIM.2001.953665
