Turbo Equalization Using Partial Gaussian Approximation
نویسندگان
چکیده
منابع مشابه
Asymptotic Performances of Multiple Turbo Codes using the Gaussian Approximation
In his thesis, Wiberg [1] has observed that if the MAP decoder inputs are gaussian and independent, then its outputs can also be approximated as gaussian random variables. Recently, El Gamal [2] has proposed to use this gaussian approximation to study the asymptotic performances of the iterative decoder of different families of concatenated codes (LDPC, turbo codes [3], ...). From this approxim...
متن کاملAnalyzing the turbo decoder using the Gaussian approximation
In this paper, we introduce a simple technique for analyzing the iterative decoder that is broadly applicable to different classes of codes defined over graphs in certain fading as well as additive white Gaussian noise (AWGN) channels. The technique is based on the observation that the extrinsic information from constituent maximum a posteriori (MAP) decoders is well approximated by Gaussian ra...
متن کاملBlind turbo equalization in Gaussian and impulsive noise
We consider the problem of simultaneous parameter estimation and restoration of finite-alphabet symbols that are blurred by an unknown linear intersymbol interference (ISI) channel and contaminated by additive Gaussian or non-Gaussian white noise with unknown parameters. Non-Gaussian noise is found in many wireless channels due to impulsive phenomena of radio-frequency interference. Bayesian in...
متن کاملTurbo-equalization: convergence analysis
We investigate a sub-optimal iterative receiver for joint equalization and decoding called Turbo-equalizer. We view the evolution of the error variance of the transmitted symbols through the iterative processing, obtaining convergence analysis. This allows us to predict the asymptotic performance (when the Turbo-equalizer has converged) but also the trigger point observed in its performance.
متن کاملComparative study of turbo equalization schemes using convolutional, convolutional turbo, and block-turbo codes
Turbo equalizers have been shown to be successful in mitigating the effects of inter-symbol interference introduced by partial response modems and by dispersive channels for code rates of 1 2. In this contribution, we comparatively studied the performance of a range of binary phase-shift keying turbo equalizers employing block-turbo codes, namely Bose–Chaudhuri–Hocquenghen turbo codes, convolut...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Signal Processing Letters
سال: 2016
ISSN: 1070-9908,1558-2361
DOI: 10.1109/lsp.2016.2581841