Title :
MIMO Quadrature-OFDMA systems
Author :
Lin Luo ; Jian Zhang ; Zhenning Shi
Author_Institution :
Inst. for Telecommun. Res., Univ. of South Australia, Mawson Lakes, SA, Australia
Abstract :
To alleviate the high peak-to-average power ratio (PAPR), high complexity in user terminal and sensitivity to carrier frequency offset (CFO) problems in current OFDMA systems, a Quadrature OFDM (Q-OFDMA) system has been recently proposed in the single-input single-output environment. In this paper we investigate the realization of multi-input multioutput (MIMO) diversity- and capacity- oriented methods in Q-OFDMA systems. We construct an Alamouti-like spacetime block code (STBC) for Q-OFDMA signal symbols, and investigate the ZF and MMSE equalizers to realize the simple detection for spatial multiplexing (SM) Q-OFDMA systems.
Keywords :
MIMO communication; OFDM modulation; equalisers; space division multiplexing; space-time codes; Alamouti-like spacetime block code; MIMO quadrature-OFDMA systems; MMSE equalizers; ZF equalizers; capacity-oriented methods; carrier frequency offset problems; multiinput multioutput diversity; peak-to-average power ratio; spatial multiplexing; user terminal; Australia; Discrete Fourier transforms; Frequency conversion; Interference; Lakes; MIMO; OFDM; Peak to average power ratio; Samarium; Transmitting antennas;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
DOI :
10.1109/PIMRC.2009.5449808
