Title :
Weighted OFDM with block codes for wireless communication
Author :
Tasadduq, Imran Ali ; Rao, Raveendra K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada
fDate :
6/23/1905 12:00:00 AM
Abstract :
One of the major disadvantages with OFDM system is its high peak-to-average power ratio (PAPR). We investigate the potential of some of the well known linear block codes in reducing the PAPR. We present a method of biasing the codewords to minimize the PAPR. The influence of combined weighting and block coding on the PAPR is investigated. A class of block codes capable of both error correction and PAPR reduction together with several weighting functions is considered. We investigate the interplay of various weighting functions with block codes in order to minimize the PAPR. The proposed schemes reduce the PAPR significantly as is evident from the simulation results
Keywords :
BCH codes; Hamming codes; OFDM modulation; block codes; linear codes; modulation coding; radio receivers; radio transmitters; BCH codes; Hamming codes; OFDM receiver; OFDM transmitter; PAPR reduction; biased BCH codes; block codes; codewords; error correction; high peak-to-average power ratio; linear block codes; orthogonal frequency division multiplexing; simulation results; weighted OFDM; weighting functions; wireless communication; Bit error rate; Block codes; Fading; Frequency conversion; Nonlinear distortion; OFDM; Peak to average power ratio; Power engineering computing; Transmitters; Wireless communication;
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.2001.953664
