Title :
Crest factor reduction using orthogonal spreading codes in multi-carrier CDMA systems
Author :
Freiberg, Lorenz ; Annamalai, A. ; Bhargava, Vijay K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
Future multi-media wireless communications systems will require high spectral efficiencies, with reduced receiver complexity. MC-CDMA systems using orthogonal spreading codes systems can increase the spectral efficiency while employing low complexity correlation receivers. A major limitation of multi-carrier systems is the potential for a high crest factor. We examine the requirements for reducing the crest factor in multi-carrier systems, and emphasise the benefits of orthogonal codes for correlation detectors. Our results demonstrate the effectiveness of orthogonal codes in reducing the crest factor while providing low complexity receiver solutions
Keywords :
code division multiple access; MC-CDMA systems; OFDM; correlation detectors; crest factor reduction; high spectral efficiencies; inter-cell interference; intra-cell interference; low complexity correlation receivers; multi-carrier CDMA systems; multimedia wireless communications; orthogonal frequency division multiplexing; orthogonal spreading codes; reduced receiver complexity; Councils; Detectors; Interference; Multiaccess communication; Multicarrier code division multiple access; Multimedia communication; Multimedia systems; OFDM; Robustness; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.624375
