Multiuser channel estimation for detection of cochannel signals
نویسندگان
چکیده
منابع مشابه
Multiuser channel estimation for detection of cochannel signals
Estimation of the channel impulse responses of multiple cochannel users is a key requirement of all multiuser detection and interference cancellation techniques, though little attention has been paid to subject in the context of TDMA systems. This paper addresses a pilotbased technique for multiuser channel estimation in a TDMA system, and makes several new contributions: it allows for time var...
متن کاملChannel Estimation for CDMA Multiuser Detection
In this paper, we derive and evaluate a demodulation scheme in code division multiple access (CDMA) systems, which adaptively estimates hyperparameter (such as noisy channel property) based on Bayesian inference method. To avoid the computational difficulty from Bayesian inference, we resort the approximation which is known as belief propagation. We evaluate the performance of the proposed demo...
متن کاملchannel estimation for mimo-ofdm systems
تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...
Multiuser Detection with Iterated Channel Estimation
In this paper, we investigate the transmission over time–variant multipath Rayleigh–fading channels employing Direct Sequence Code Division Multiple Access (DS–CDMA). In order to estimate the actual channel state as well as to detect the users’ data symbols an iterated channel estimation scheme employing pilot symbols in conjunction with soft decision interference cancellation is applied. We sh...
متن کاملMultiuser Detection and Channel Estimation for Multibeam Satellite Communications
In this paper, iterative multi-user detection techniques for multi-beam communications are presented. The solutions are based on a successive interference cancellation architecture and a channel decoding to treat the co-channel interference. Beams forming and channels coefficients are estimated and updated iteratively. A developed technique of signals combining allows power improvement of the u...
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 Transactions on Communications
سال: 2001
ISSN: 0090-6778
DOI: 10.1109/26.957406