64-QAM 4×4 MIMO decoders based on Successive Projection Algorithm

Author

Marín-Roig, José ; Almenar, Vicenç ; Valls, Javier ; Canet, M. José

Author_Institution

Inst. de Telecomun. y Aplic. Multimedia, Univ. Politec. de Valencia, Gandia

fYear

2008

fDate

Aug. 31 2008-Sept. 3 2008

Firstpage

610

Lastpage

613

Abstract

This paper presents two algorithms to extend the MIMO-decoding capability of successive projection algorithm (SPA). The algorithms, called Flag-SPA and Relaxed-SPA, are based on different methods to avoid repeating the selected path in each iteration of the algorithm, the first by using a flag matrix, the second by assigning a high weight to a selected path. Equivalences with K-best algorithm in terms of average BER for a SNR range from 25 to 30 dB have been found and it is shown that for low SNR the proposed SPA-based algorithms exhibit lower computational load than their equivalent K-best algorithm.

Keywords

MIMO communication; codecs; error statistics; iterative decoding; quadrature amplitude modulation; BER; Flag-SPA; K-best algorithm; MIMO decoders; MIMO wireless data transmission technology; QAM; Relaxed-SPA; SPA; bit error rate; iterative algorithm; quadrature amplitude modulation; successive projection algorithm; Bit error rate; Data communication; Iterative decoding; MIMO; Maximum likelihood decoding; Projection algorithms; Receiving antennas; Sorting; Telecommunications; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on

Conference_Location

St. Julien´s

Print_ISBN

978-1-4244-2181-7

Electronic_ISBN

978-1-4244-2182-4

Type

conf

DOI

10.1109/ICECS.2008.4674927

Filename

4674927