Title :
A Highly Mobile SDM-OFDM System Using Reduced-Complexity-and-Latency Processing
Author :
Kimura, Ryota ; Funada, Ryuhei ; Harada, Hiroshi ; Shimamoto, Shigeru
Author_Institution :
Waseda Univ., Tokyo
Abstract :
We propose a new space division multiplexing-orthogonal frequency division multiplexing system using reduced-complexity-and-latency detection and channel estimation algorithms. It is important to reduce a latency from receiver processing because the latency degrades performances of wireless systems in a mobile fading environment. In this paper, we evaluate and discuss bit error rate performance and computational complexity of the proposed system. From simulation results, we observe that our proposed estimation scheme improves the accuracy more than conventional minimum mean square error based schemes, and that the proposed system outperforms a maximum likelihood detection based system in a mobile fading environment. Moreover, we confirm that the proposed system is superior to the conventional schemes from the points of not only the performance but also the complexity.
Keywords :
OFDM modulation; channel estimation; computational complexity; error statistics; least mean squares methods; maximum likelihood detection; mobile radio; space division multiplexing; bit error rate performance; channel estimation algorithms; computational complexity; highly mobile SDM-OFDM system; maximum likelihood detection; minimum mean square error based schemes; mobile fading environment; reduced-complexity-and-latency processing; space division multiplexing-orthogonal frequency division multiplexing system; Bit error rate; Channel estimation; Computational complexity; Computational modeling; Degradation; Delay; Fading; Frequency division multiplexing; Mean square error methods; Performance evaluation;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394758