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Online Bayesian activity detection in DS/CDMA networks

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3 Author(s)
Thanh Ngoc Bui ; Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Vic., Australia ; Krishnamurthy, V. ; Poor, H.V.

An on-line Bayesian based multiple hypotheses Shiryayev sequential probability ratio test (SSPRT) for the detection/isolation of new active users in a multiuser code division multiple access (CDMA) environment is presented. This SSPRT algorithm makes use of a priori knowledge of the user activity parameter. Comparison by simulation between this SSPRT algorithm and the non-Bayesian Matrix cumulative sum (CUSUM) shows that when such information is available, the SSPRT algorithm that uses this information can achieve better performance than the non-Bayesian approach.

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Signal Processing, IEEE Transactions on  (Volume:53 ,  Issue: 1 )