adaptive multi-user

Based on the traditional multi-user detection, http://www.fpdf.de/forum
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http://forum.altolan.com adaptive multi-user detector eliminates the need to know the signature waveforms and the timing of the interferers and has to need training data sequences for every active user. But the frequent use of training sequence is certainly a waste of channel bandwidth. The blind adaptation schemes (BMUD) does not require training sequences and the discount wedding gowns interference user's information, because it only needs the prior knowledge of the signature waveform and the timing of the desired user, that is, the same knowledge as the conventional receiver.This paper mainly studied the blind multiuser detection algorithms of the DS-UWB cheap shoes blog 2010 system. First of all, it introduces the basic theory of the multi-user detection, that is the basic idea and basic structure of the multi-user detector. Then it makes the mathematical model of the custom made prom dresses blind multiuser detection in the DS-UWB system. It in-depth studied several classic algorithms of the blind multiuser detection and carried out a simulation. Constant Modulus algorithm (CMA) uses the priori knowledge for detecting. The performance of the improved algorithm (LS-CMA) is superior to cheap wedding gown dresses CMA algorithm.The focus of the study in this article are the blind multiuser cheap ralph lauren polo shirts detection algorithms which are based on the subspace method. Based on the subspace method for blind multi-user detection algorithm's basic idea are using signal subspace parameters show a linear ralph lauren polo shirts multi-user detector weight vector. Literature [58] thought to be sub-space for multi-user detection techniques, and proposed sub-space structure of multi-user detection. It also through adaptive subspace tracking algorithm to derive multi-user detector weight vector, and finally solved the expectations the user signal.