Title :
A space-time trellis coding scheme for vector Gaussian broadcast channels
Author :
Li, Yonghui ; Vucetic, Branka ; Dohler, Mischa
Author_Institution :
Sch. of Electr. & Inf. Eng., Sydney Univ., NSW, Australia
fDate :
5/1/2005 12:00:00 AM
Abstract :
In this letter, a multiuser space-time trellis coding (MU-STTC) scheme is proposed for MIMO vector Gaussian broadcast channels (VGBC). For the system with two transmit antennas and two users with one receive antenna each, the proposed scheme decomposes the system into two subsystems, each of which is equivalent to a system with two transmit and one receive antenna with known interference. A novel precoding scheme is developed to eliminate such interference. The proposed scheme enables to incorporate space time trellis coding and adaptive weighting into the system to provide a significant coding and weighting gain. Simulation results confirm its good performance.
Keywords :
Gaussian channels; MIMO systems; antenna arrays; broadcast channels; channel coding; interference suppression; multiuser channels; radiofrequency interference; receiving antennas; space-time codes; transmitting antennas; trellis codes; MIMO system; MU-STTC; VGBC; adaptive weighting; interference suppression; multiuser space-time trellis coding scheme; precoding scheme; receive antenna; system decomposition; transmit antenna; vector Gaussian broadcast channel; Broadcasting; DSL; Decoding; Interference channels; Interference elimination; MIMO; Receiving antennas; Space time codes; Transmitters; Transmitting antennas;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.1431147
