Title :
Cost-Effective Equalization for STBC MIMO/MISO OFDM Systems over Multipath Fading Channel
Author :
Yi-Hsien Lin ; Chih-Hsien Lin ; Chih-Feng Wu ; Muh-Tian Shiue ; Chorng-Kuang Wang
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A cost-effective multi-input multi-output (MIMO)/ multi-input single-output (MISO) equalization is proposed for space-time block code (STBC) MIMO/MISO orthogonal frequency division multiplexing (OFDM) system based on strength reduction (SR) transformation. The presented algorithm contains three parts: MIMO/MISO detection, updating and channel estimation processes. Considering IEEE 802.11 n system as a test vehicle, the multiplication complexity of the proposed algorithm can yield 33% reduction compared with the conventional approach. The corresponding hardware complexity is decreased about 26%. The system performance using the cost-effective equalization is identical with the conventional technique evaluated by uncoded symbol-error-rate simulation over indoor multipath fading channel.
Keywords :
MIMO communication; OFDM modulation; block codes; channel estimation; fading channels; multipath channels; space-time codes; IEEE 802.11n system; STBC MIMO-MISO OFDM Systems; channel estimation processes; cost-effective equalization; hardware complexity; indoor multipath fading channel; multiinput single-output equalization; orthogonal frequency division multiplexing; space-time block code; strength reduction transformation; symbol-error-rate simulation; test vehicle; Block codes; Channel estimation; Fading; Hardware; MIMO; OFDM; Strontium; System performance; System testing; Vehicles;
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th
Conference_Location :
Anchorage, AK
Print_ISBN :
978-1-4244-2514-3
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2009.5378675
