Title :
Signal detection with precoding for MIMO-OFDM systems
Author :
Hao, Miin-Jong ; Chang, Wen-Lin
Author_Institution :
Nat. Kaohsiung First Univ. of Sci. & Technol., Kaohsiung
fDate :
Nov. 28 2007-Dec. 1 2007
Abstract :
Using QR algorithm can reduce a large amount of computation in MIMO-OFDM with the conventional V- BLAST signal detection. However, the QR method also causes the error propagation in the signal detection procedure. We propose a method applying the precoding process in the transmit end for various detection algorithms. The precoding process can cancel interference at transmit end to attain free of error propagation. Simulation verified the work in error propagation cancellation and excellent system performance is obtained.
Keywords :
MIMO communication; OFDM modulation; precoding; signal detection; MIMO-OFDM systems; QR algorithm; V-BLAST signal detection; detection algorithms; error propagation; interference cancellation; precoding; signal detection; Antennas and propagation; Interference cancellation; MIMO; Matrix decomposition; OFDM; Receiving antennas; Signal detection; Signal processing algorithms; Transmitting antennas; Wireless communication; Error propagation; GMD; QR; Tomlinson-Harashima (TH); VBLAST;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2007. ISPACS 2007. International Symposium on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-1447-5
Electronic_ISBN :
978-1-4244-1447-5
DOI :
10.1109/ISPACS.2007.4445939
