TY - GEN
T1 - A low complexity quantization technique for virtual MIMO systems
AU - Gonzalez-Perez, M. G.
AU - Thompson, John
PY - 2015/7/1
Y1 - 2015/7/1
N2 - By means of wireless cooperation, Virtual Multiple- Input Multiple-Output (V-MIMO) systems provide significant enhancements in terms of spectral efficiency and performance. A large V-MIMO system that implements bit-interleaved coded modulation (BICM) transmission and compress-and-forward (CF) cooperation is considered. Since, constructing a reliable codebook is the most computationally complex task performed by the relay nodes, in this paper, we evaluate two low complexity quantization techniques. A comparison in terms of the codebook design and overhead complexity is presented. Error performance results show that the Lloyd - Max algorithm (LM-SQ) is simpler to design and can achieve a performance comparable to optimal Voronoi Vector Quantization (V-VQ). Further, Uniform Scalar Quantization (U-SQ) is also considered, as its low complexity makes it particularly suitable for the upcoming large wireless systems.
AB - By means of wireless cooperation, Virtual Multiple- Input Multiple-Output (V-MIMO) systems provide significant enhancements in terms of spectral efficiency and performance. A large V-MIMO system that implements bit-interleaved coded modulation (BICM) transmission and compress-and-forward (CF) cooperation is considered. Since, constructing a reliable codebook is the most computationally complex task performed by the relay nodes, in this paper, we evaluate two low complexity quantization techniques. A comparison in terms of the codebook design and overhead complexity is presented. Error performance results show that the Lloyd - Max algorithm (LM-SQ) is simpler to design and can achieve a performance comparable to optimal Voronoi Vector Quantization (V-VQ). Further, Uniform Scalar Quantization (U-SQ) is also considered, as its low complexity makes it particularly suitable for the upcoming large wireless systems.
UR - http://www.scopus.com/inward/record.url?scp=84940416730&partnerID=8YFLogxK
U2 - 10.1109/VTCSpring.2015.7145617
DO - 10.1109/VTCSpring.2015.7145617
M3 - Conference contribution
AN - SCOPUS:84940416730
T3 - IEEE Vehicular Technology Conference
BT - 2015 IEEE 81st Vehicular Technology Conference, VTC Spring 2015 - Proceedings
PB - Institute of Electrical and Electronics Engineers
T2 - 81st IEEE Vehicular Technology Conference, VTC Spring 2015
Y2 - 11 May 2015 through 14 May 2015
ER -