Cross-ambiguity function domain multipath channel parameter estimation
نویسندگان
چکیده
Article history: Available online 23 November 2011
منابع مشابه
Multipath-Doppler diversity of OFDM signals in an underwater acoustic channel
High-speed communications over the underwater acoustic channel are difficult due to time-varying multipath propagation and Doppler scattering. These phenomena, however, can be effectively used for joint multipath-Doppler diversity of received signals similarly to multipath diversity in a conventional Rake receiver. We present a new signal processing technique for data transmission over fast fad...
متن کاملMultipath channel identification by using global optimization in ambiguity function domain
A new transform domain array signal processing technique is proposed for identification of multipath communication channels. The received array element outputs are transformed to delay–Doppler domain by using the cross-ambiguity function (CAF) for efficient exploitation of the delay–Doppler diversity of the multipath components. Clusters of multipath components can be identified by using a simp...
متن کاملOptimal time-frequency deconvolution filter design for nonstationary signal transmission through a fading channel: AF filter bank approach
The purpose of this paper is to develop a new approach—time–frequency deconvolution filter—to optimally reconstruct the nonstationary (or time-varying) signals that are transmitted through a multipath fading and noisy channel. A deconvolution filter based on ambiguity function (AF) filter bank is proposed to solve this problem via a three-stage filter bank. First, the signal is transformed via ...
متن کاملLinear block precoding for blind channel estimation in OFDM systems
We propose a novel approach for blind channel estimation over frequency selective channels in OFDM system. By introducing a non-redundant unitary precoder for each pair of blocks before they enter the OFDM system, the channel can be identified up to a complex scalar ambiguity based upon a simple cross-correlation operations applied to successive received signal blocks. It is shown that the prop...
متن کاملAn adaptive channel estimator for CDMA systems in multipath fading channels
CDMA systems in multipath fading channels need to estimate channel parameters for coherent detection of the transmitted signals. In this paper we present a simple but effective channel estimation algorithm that can be incorporated into most types of multiuser receivers to obtain good detection performance. This technique uses a set of correlation filters to independently estimate each of the ch...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Digital Signal Processing
دوره 22 شماره
صفحات -
تاریخ انتشار 2012