منابع مشابه
Blind paraunitary equalization
In this paper a blind MIMO space-time equalizer is described, dedicated to convolutive mixtures when observations have been pre-whitened. Filters preserving space-time whiteness are paraunitary; a parameterization of such filters is proposed. Theoretical developments then lead to a numerical algorithm that sweeps all pairs of delayed outputs. This algorithm involves the solution of a polynomial...
متن کاملOn Jacobi-type methods for blind equalization of paraunitary channels
In this paper a study of the cumulant-based blind equalization algorithms PAJOD and PAFA is conducted. Both algorithms assume that the data have been pre-whitened and hence the problem reduces to the estimation of paraunitary channels. The first contribution of this paper is an efficient implementation of the PAJOD algorithm called PAJOD2. The second contribution of this paper is a performance ...
متن کاملBlind MIMO paraunitary equalizer
This paper introduces a new Blind Source Separation algorithm for convolutive mixtures. In addition to separate sources, this algorithm respects the paraunitary property of the model considered, obtained after whitening observations. In order to do this, the equalizer is factorized in a novel manner. After a presentation of theoretical results, a numerical algorithm is then derived. This algori...
متن کاملBlind Equalization
Equalization is a very essential topic in data communication. Due to the communication channel, which can be wireline or wireless and furthermore time variant, the transmitted data symbols are distorted linearly over the channel. However, to overcome the effects of the channel, one can employ an equalizer which is adapted during the transmission of a training sequence. If transmission of traini...
متن کاملBlind Channel Equalization
— Future services demand high data rate and quality. Thus, it is necessary to define new and robust algorithms to equalize channels and reduce noise in communications. Nowadays, new equalization algorithms are being developed to optimize the channel bandwidth and reduce noise, namely, Blind Channel Equalization. Conventional equalizations minimizing mean-square error generally require a trainin...
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ژورنال
عنوان ژورنال: Signal Processing
سال: 2009
ISSN: 0165-1684
DOI: 10.1016/j.sigpro.2008.08.014