A maximum likelihood digital receiver using coordinate ascent and the discrete wavelet transform
Open Access
- 1 March 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Signal Processing
- Vol. 47 (3) , 813-825
- https://doi.org/10.1109/78.747786
Abstract
We present a Maximum Likelihood #ML# method for joint estimation of amplitude, phase, timedelay, and data demodulation in a single user direct sequence spread spectrum communicationsystem. Since maximization of the likelihood function is analytically intractable a novel coordinateascent algorithm is used to obtain sequential updates of the data symbols and all unknown nuisanceparameters. The novelty of the algorithm is the use of a multi-resolution expansion of the receivedsignal and the...Keywords
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