TY - GEN
T1 - Low-complexity detectors for spatially-modulated MIMO systems
AU - Wu, Wen-Rong
AU - Lin, Chun Tao
AU - Liu, Chia Yu
PY - 2014/6/25
Y1 - 2014/6/25
N2 - Spatial modulation (SM) combined with spatial multIPlexing is a newly developed transmission technique in multIPle-input multIPle-output (MIMO) systems. The resultant system, referred to as SM-MIMO, can use the maximum-likelihood (ML) detector jointly detecting the antenna index and symbol vector. As known, the ML detector can achieve optimum performance; however, its computational complexity may become prohibitively high when the dimension of MIMO system or symbol constellation is large. In this paper, we propose a new method to solve the problem. The main idea is to conduct a two-stage detection, antenna index and symbol. We develop a Gaussian approximation method such that the antenna-index can be first reliably detected. An enhanced method is also proposed so that the near-optimum performance can be obtained. Simulations show that our methods outperform existing methods while the detection complexity remains low.
AB - Spatial modulation (SM) combined with spatial multIPlexing is a newly developed transmission technique in multIPle-input multIPle-output (MIMO) systems. The resultant system, referred to as SM-MIMO, can use the maximum-likelihood (ML) detector jointly detecting the antenna index and symbol vector. As known, the ML detector can achieve optimum performance; however, its computational complexity may become prohibitively high when the dimension of MIMO system or symbol constellation is large. In this paper, we propose a new method to solve the problem. The main idea is to conduct a two-stage detection, antenna index and symbol. We develop a Gaussian approximation method such that the antenna-index can be first reliably detected. An enhanced method is also proposed so that the near-optimum performance can be obtained. Simulations show that our methods outperform existing methods while the detection complexity remains low.
UR - http://www.scopus.com/inward/record.url?scp=84944312971&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2014.7136157
DO - 10.1109/PIMRC.2014.7136157
M3 - Conference contribution
AN - SCOPUS:84944312971
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 188
EP - 192
BT - 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
Y2 - 2 September 2014 through 5 September 2014
ER -