Title :
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
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;
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
DOI :
10.1109/ISPACS.2009.5383784
