Title :
Tree-Based Reparameterization for Symbol Detection in Spatially Multiplexed MIMO Systems in Frequency Flat Fading
Author :
Vithanage, C.M. ; Andrieu, C. ; Piechocki, R.J. ; Coon, J.P.
Author_Institution :
Dept. of Math., Bristol Univ.
Abstract :
Reduced complexity detection of spatially multiplexed data transmissions under frequency flat fading is considered. Noting that the optimal detection is the generation of marginal distributions of a joint probability distribution, we use the approximate marginal generating algorithm termed the tree-based reparameterization. The resulting system complexity is having an order which is less than quadratic in the number of transmit antennas. Simulation of a 8 times 8 BPSK system shows a coded bit error rate of 10-3 at an SNR level of only IdB greater than required by the optimal method
Keywords :
MIMO communication; error statistics; fading channels; phase shift keying; signal detection; statistical distributions; trees (mathematics); BPSK system; frequency flat fading; joint probability distribution; optimal detection; spatially multiplexed MIMO systems; symbol detection; transmit antennas; tree-based reparameterization; Antennas and propagation; Belief propagation; Detectors; Fading; Frequency; Graphical models; MIMO; Probability distribution; Receiving antennas; Transmitting antennas; MIMO; approximate inference; belief propagation; tree-based reparameterization;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-9710-X
Electronic_ISBN :
0-7803-9711-8
DOI :
10.1109/SPAWC.2006.346366
