Title :
MAP metric for blind phase sequence detection in selected mapping
Author :
Baxley, Robert J. ; Zhou, G. Tong
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Selected mapping (SLM) is a promising technique to reduce the high peak-to-average power ratio (PAR) of orthogonal frequency division multiplexing (OFDM) signals. In this paper, we derive the optimal phase sequence detection metric for blind selected mapping (BSLM) and show that the minimum distance metric is suboptimal. We then define a certain selection criterion in the transmitter which assigns different probabilities to different mapping sequences. These probabilities are integrated into the optimal metric to achieve several dBs of SNR improvement in blind phase sequence detection.
Keywords :
OFDM modulation; interference suppression; maximum likelihood detection; optimisation; phase detectors; radio transmitters; BSLM; MAP metric; OFDM signal; PAR reduction; blind selected mapping; optimal phase sequence detection; orthogonal frequency division multiplexing; peak-to-average power ratio; radio transmitter; Constellation diagram; Digital video broadcasting; Frequency division multiplexing; Frequency domain analysis; Interference; OFDM; Peak to average power ratio; Phase detection; Signal processing; Time domain analysis; Orthogonal frequency division multiplexing (OFDM); peak-to-average power ratio (PAR); selected mapping (SLM);
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2005.854170