Title :
Blind separation of independent co-channel signals
Author :
Papadias, Constantinos B. ; Paulraj, Arogyaswami J.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
We consider the problem of separating a number of independent and identically distributed co-channel signals in the presence of inter-user (IUI) and inter-symbol (ISI) interference. Assuming a multiple-input-multiple-output (MMO) linear channel, we provide necessary and sufficient conditions for blind recovery of all the signals. Based on these conditions, we propose optimization criteria for the development of blind adaptive multi-user (MU) algorithms. The optimality of these criteria is investigated and computer simulations are provided in support of the theoretical results
Keywords :
MIMO systems; adaptive equalisers; adaptive signal processing; identification; intersymbol interference; telecommunication channels; ISI; MMO linear channel; blind adaptive multi-user algorithms; blind channel equalization; blind recovery; blind separation; computer simulations; identifiability conditions; independent identically distributed co-channel signals; inter-user interference; intersymbol interference; multiple-input-multiple-output linear channel; necessary conditions; optimization criteria; sufficient conditions; Blind equalizers; Computer simulation; Frequency; Information systems; Intersymbol interference; Laboratories; MIMO; Modulation; Source separation; Sufficient conditions;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.627993
