Improved lattice-reduction-aided detectors over added search signals using quantization error for MIMO-OFDM systems

Author

Kim, Jongmoon ; Ahn, Junil ; Kim, Kiseon

Author_Institution

Gwangju Insititute of Sci. & Technol. (GIST), Seoul, South Korea

fYear

2009

fDate

7-9 Jan. 2009

Firstpage

537

Lastpage

540

Abstract

This paper describes approaches to the problem that lattice-reduction-aided (LRA) detectors have non-ideal decision region and detect outlying constellation points. The proposed approaches find the shortest distance from a received signal to added search signals using quantization error. Using these approaches, we can improve a bit error (BER) performance with a low complexity compared to full search maximum-likelihood (ML) detection.

Keywords

MIMO communication; OFDM modulation; maximum likelihood detection; MIMO-OFDM systems; added search signals; bit error performance; full search maximum-likelihood detection; improved lattice-reduction-aided detector; lattice-reduction-aided detectors; nonideal decision region; outlying constellation points; quantization error; received signal; shortest distance; Amplitude modulation; Bit error rate; Detectors; MIMO; Maximum likelihood detection; Quadrature amplitude modulation; Quantization; Receiving antennas; Signal processing; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2009. ISPACS 2009. International Symposium on

Conference_Location

Kanazawa

Print_ISBN

978-1-4244-5015-2

Electronic_ISBN

978-1-4244-5016-9

Type

conf

DOI

10.1109/ISPACS.2009.5383784

Filename

5383784