DocumentCode :
459661
Title :
EXIT Analysis of a Soft-Input/Soft-Output Iterative Multiuser Detector
Author :
Zarikoff, Brad W. ; Cavers, James K.
Author_Institution :
School of Engineering Science, Faculty of Applied Sciences, Simon Fraser University, Burnaby, BC, Canada, V5A 1S6. bwzariko@sfu.ca
Volume :
11
fYear :
2006
fDate :
38869
Firstpage :
4965
Lastpage :
4970
Abstract :
This paper applies extrinsic information (EXIT) analysis to an internally iterative multiuser detector (IMUD) in serial concatenation with convolutional codes. The focus is overloaded conditions, in which the number of transmitters exceeds the number of receiver antennas. The study seeks to verify if EXIT charts can be used as a design tool under these circumstances. The use of non-Gaussian LLR distributions in performance estimation is discussed. The mutual information of the extrinsic information from IMUD is characterized under a variety of situations. It is shown that the EXIT charts do provide a means to determine both the minimum SNR and necessary number of iterations for convergence. However, estimating the bit error rate from the EXIT chart does not seem to be possible except in special circumstances.
Keywords :
Bit error rate; Concatenated codes; Convergence; Convolutional codes; Detectors; Information analysis; Multiuser detection; Receiving antennas; Transmitters; Transmitting antennas; EXIT analysis; MIMO systems; iterative detection; multiuser detection;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2006. ICC '06. IEEE International Conference on
Conference_Location :
Istanbul
ISSN :
8164-9547
Print_ISBN :
1-4244-0355-3
Electronic_ISBN :
8164-9547
Type :
conf
DOI :
10.1109/ICC.2006.255452
Filename :
4024836
Link To Document :
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