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ICASSP
2008
IEEE

A factor graph approach to joint iterative data detection and channel estimation in pilot-assisted IDMA transmissions

9 years 1 months ago
A factor graph approach to joint iterative data detection and channel estimation in pilot-assisted IDMA transmissions
We consider a pilot-assisted interleave-division multiple access (IDMA) system transmitting over block-fading channels. We describe this system in terms of a factor graph and use the sum-product algorithm to develop a receiver that performs joint data detection and channel estimation. Suitable approximations to the messages passed by the sum-product algorithm yield an implementation with a complexity that scales linearly with the number of users. Simulation results demonstrate large performance gains compared to classical receivers performing separate channel estimation and data detection.
Clemens Novak, Gerald Matz, Franz Hlawatsch
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICASSP
Authors Clemens Novak, Gerald Matz, Franz Hlawatsch
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