Title :
Sphere Decoding for MIMO OFDM with the Aid of HARQ
Author_Institution :
Beijing Univ. of Technol., Beijing
Abstract :
In this paper, we proposed a computationally efficient sphere decoding method for MIMO OFDM system with the aid of HARQ. This is a cross layer design scheme which adopt the SNR updating information based on retransmission operation to reduced the search radius of sphere detector, it leads the low complexity of sphere detection. Further more, a modification of sphere decoding is proposed to handle non-rectangular constellations, which is more effective for universal modulation signaling.
Keywords :
MIMO communication; OFDM modulation; automatic repeat request; telecommunication signalling; HARQ; MIMO OFDM; cross layer design scheme; nonrectangular constellations; retransmission operation; sphere decoding; universal modulation signaling; Automatic repeat request; Cross layer design; Decoding; Forward error correction; Lattices; MIMO; Microwave technology; OFDM; Protocols; Signal to noise ratio; HARQ; MIMO OFDM; sphere decoding;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-1045-3
Electronic_ISBN :
978-1-4244-1045-3
DOI :
10.1109/MAPE.2007.4393595
