Title :
MLSD Bounds and Near-Optimum Receiver Designs for Clipped OFDM Channels
Author :
Peng, Fei ; Ryan, William E.
Author_Institution :
Univ. of Arizona, Tucson
Abstract :
We derive very tight closed-form lower bounds of symbol/bit error probability for the maximum-likelihood sequence detection (MLSD) on the clipped OFDM channels with AWGN and flat block fading. We present a new near-optimum detection algorithm that achieves the MLSD bound with a few iterations for the clipped OFDM channel with both high and low clipping levels. We consider both Nyquist-rate and oversampled OFDM systems with rectangular QAM signaling.
Keywords :
AWGN channels; OFDM modulation; error statistics; fading channels; maximum likelihood sequence estimation; radio receivers; AWGN; MLSD bounds; Nyquist rate; clipped OFDM channels; flat block fading; maximum-likelihood sequence detection; near-optimum receiver designs; oversampled OFDM systems; rectangular QAM signaling; symbol/bit error probability; AWGN; Additive white noise; Detection algorithms; Fading; Frequency diversity; Gaussian noise; Maximum likelihood detection; OFDM modulation; Quadrature amplitude modulation; Sampling methods;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.325
