A New Blind SLM Scheme With Low Decoding Complexity for OFDM Systems

• Published in: IEEE transactions on broadcasting Vol. 58; no. 4; pp. 669 - 676
• Main Authors: JOO, Hyun-Seung, HEO, Seok-Joong, JEON, Hyun-Bae, NO, Jong-Seon, SHIN, Dong-Joon
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.2012; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Blind selected mapping (BSLM); Coding, codes; Complexity theory; Constellation diagram; Decoding; decoding complexity; Exact sciences and technology; Information, signal and communications theory; Modulation, demodulation; Multiplexing; orthogonal frequency division multiplexing (OFDM); Peak to average power ratio; peak-to-average power ratio (PAPR); side information (SI); Signal and communications theory; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Fading channels; Performance evaluation; Error analysis; Quadrature amplitude modulation; Error probability; Error estimation; Partition method; Bit error rate; decoding complexity; Blind selected mapping (BSLM); Peak to average power ratio; Mapping; Numerical method; Failures; side information (SI); Maximum likelihood decoding; Quadrature phase shift keying; orthogonal frequency division multiplexing (OFDM), peak-to-average power ratio (PAPR); Partitioning; Algorithm complexity; Orthogonal frequency division multiplexing
• DOI: 10.1109/TBC.2012.2216472
• ISSN: 0018-9316

In this paper, a new blind selected mapping (BSLM) scheme is proposed for orthogonal frequency division multiplexing systems. The proposed BSLM scheme embeds the side information identifying a phase sequence into itself by giving the optimal phase offset to the elements of each phase sequence, which are determined by the biorthogonal vectors for the partitioned subblocks. When U phase sequences and maximum likelihood decoder are used, the proposed BSLM scheme reduces the decoding complexity by ( U -2)/ U compared with the conventional BSLM scheme. Also, pairwise error probability (PEP) analysis for the proposed BSLM scheme is performed over the fading channel. Based on the PEP analysis, the bit error rate (BER) performance of the proposed BSLM scheme is shown to be determined by the subblock partitioning and phase offset. Finally, it is shown that for QPSK and 16-QAM, the detection failure probability and the BER of the proposed BSLM scheme are almost the same as those of the conventional BSLM scheme through numerical analysis.