DocumentCode :
231104
Title :
Toward real-time, low-power, highly parallel decoding of the golden code in Mobile WiMAX base stations
Author :
Amani, E. ; Djouani, Karim ; Kurien, A.
Author_Institution :
F´SATI/ Dept. of Electr. Eng., Tshwane Univ. of Technol. (TUT), Tshwane, South Africa
fYear :
2014
fDate :
Feb. 26 2014-March 1 2014
Firstpage :
594
Lastpage :
599
Abstract :
The Golden Code (GC) is an optimal full-rate full-diversity STBC for 2 × 2 MIMO communication systems. It is incorporated as a STBC communication method in the IEEE 802.16e (WiMAX) standard. However, its high decoding complexity has prevented its implementation in practical systems. Optimal and suboptimal decoders with reduced complexity have been proposed recently and the best ones achieve a worst-case complexity of O(N2) and O(N1S), where N is the underlying QAM constellation size. In this paper, the fast essentially ML decoder with complexity of O(N2) is implemented on a low-power highly parallel SIMD processor, the ClearSpeed CSX700. The SIMD architecture of the CSX700 achieves significant reduction in decoding latency. The implementation in this paper reveals the potential for realtime decoding of the GC with a power consumption that is less than 100 W. This CSX700 solution can find application in the software-defined radio (SDR) of a Mobile WiMAX base station (BS).
Keywords :
WiMax; decoding; encoding; mobile communication; parallel processing; quadrature amplitude modulation; software radio; telecommunication computing; BS; GC; IEEE 802.16e WiMAX standard; MIMO communication systems; ML decoder; QAM constellation size; SDR; SIMD architecture; STBC communication method; decoding complexity; decoding latency; golden code; highly parallel decoding; mobile WiMAX base stations; optimal full rate full diversity; parallel SIMD processor; software defined radio; suboptimal decoders; worst-case complexity; Complexity theory; Decoding; MONOS devices; Mobile communication; Phase shift keying; Quadrature amplitude modulation; WiMAX; Golden Code (GC); low power consumption; parallel decoding; single-instruction multiple-data (SIMD) processor; space-time block code (STBC);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Technology (ICIT), 2014 IEEE International Conference on
Conference_Location :
Busan
Type :
conf
DOI :
10.1109/ICIT.2014.6894997
Filename :
6894997
Link To Document :
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