naa a22 4500 51079694X CHVBK 20180411083340.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11277-013-1221-x doi (NATIONALLICENCE)springer-10.1007/s11277-013-1221-x A Novel Nonlinear Constellation Precoding for OFDM Systems with Subcarrier Grouping [Elektronische Daten] [M. Raja, P. Muthuchidambaranathan] This paper proposed a novel nonlinear constellation precoding (NCP) technique based on maximum distance separable (MDS) codes in orthogonal frequency-division multiplexing (OFDM) systems. The proposed method envisage to maximize both the diversity and coding gains for any number of diversity channels and desired diversity orders. The novel NCP technique combined with subcarrier groping in OFDM systems to replace the most existing linear constellation precoding (LCP) scheme. In this scheme, the full set of subcarriers are splitted into smaller groups and the codewords are constructed from $$q$$ q point constellation mapper with MDS encoder. The maximum-likelihood (ML) decoder is used in the most existing signal space diversity technique which is replaced by diversity channel selection (DCS) to reduce the decoding complexity with the cost of marginal performance loss. The effect of the Inter-carrier interference (ICI) introduced by the carrier frequency offsets (CFO) also analyzed in the proposed OFDM system. The superiority of the proposed novel NCP technique over the previously proposed designs is verified by simulation results. Springer Science+Business Media New York, 2013 Orthogonal frequency-division multiplexing (OFDM) systems nationallicence Linear constellation precoding (LCP) nationallicence Diversity channel selection (DCS) nationallicence Raja M. Department of Electronics and Communication Engineering, National Institute of Technology (NIT), Tiruchirappalli, India aut Muthuchidambaranathan P. Department of Electronics and Communication Engineering, National Institute of Technology (NIT), Tiruchirappalli, India aut Wireless Personal Communications Springer US; http://www.springer-ny.com 73/3(2013-12-01), 867-884 0929-6212 73:3<867 2013 73 11277 https://doi.org/10.1007/s11277-013-1221-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1221-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Raja M. Department of Electronics and Communication Engineering, National Institute of Technology (NIT), Tiruchirappalli, India aut NATIONALLICENCE 700 1- Muthuchidambaranathan P. Department of Electronics and Communication Engineering, National Institute of Technology (NIT), Tiruchirappalli, India aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 73/3(2013-12-01), 867-884 0929-6212 73:3<867 2013 73 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer