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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/2329

Title: A joint performance measure for the decorrelating multiuser detector
Authors: Nigam, Ila
Mallik, Ranjan K
Keywords: signal-to-noise ratio
cross-correlation
Issue Date: 2004
Citation: Wireless Communications, IEEE Transactions on, 3(4), 1024 - 1030p.
Abstract: We analyze the performance of the decorrelating multiuser detector for a wireless communication system. Instead of looking at the error probability for each user, we focus on the probability distribution of the number of correctly decoded users at the receiver and the average number of correctly decoded users under the conditions of equicorrelated signatures and perfect power control. The approach is motivated by the fact that the error events for different users are not independent. Numerical results show that when the number of users is large, instead of using a set of long signatures with a very low negative cross-correlation, we can use a set of shorter signatures with a reasonably high positive correlation without sacrificing the performance. It is also found that the average number of correctly decoded users increases with increase in signal-to-noise ratio and decreases when the cross-correlation between users becomes more negative or more positive.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/2329
Appears in Collections:Electrical Engineering

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