Title :
Study on Performance of Non-Orthogonal Perfect Space-Time Block Coded OFDM Systems
Author :
Liu, Wei ; Shao, Zhu-lei
Author_Institution :
Sch. of Electron. Inf. Eng., Henan Univ. of Sci. & Technol., Luoyang, China
Abstract :
A novel wireless transmission method was proposed in this paper. The new method combined non-orthogonal perfect space-time block codes (NPSTBC) and orthogonal frequency division multiplexing (OFDM) together. Compared with orthogonal space-time block codes, the NPSTBC based cyclic division algebras can achieve full-diversity transmission. The low-complexity sphere decoder is used to realize the decoding of NPSTBC. The results show that the performance of NPSTBC-OFDM system is better than that of orthogonal space-time block coded OFDM system and linear-dispersion space-time coded OFDM system under identical spectrum utilization.
Keywords :
OFDM modulation; algebra; block codes; space-time codes; NPSTBC-OFDM system; cyclic division algebras; identical spectrum utilization; low-complexity sphere decoder; nonorthogonal perfect space-time block codes; orthogonal frequency division multiplexing; wireless transmission method; Algebra; Block codes; Decoding; OFDM modulation; Receiving antennas; Signal processing; Space technology; Space time codes; Transmitting antennas; Wireless communication;
Conference_Titel :
Computer Network and Multimedia Technology, 2009. CNMT 2009. International Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-5272-9
DOI :
10.1109/CNMT.2009.5374502
