Timing estimation and resynchronization for amplify-and- forward communication systems

Authors:
Xiao Li;Chengwen Xing;Yik-Chung Wu;S. C. Chan
Affiliations:
Department of Electrical and Computer Engineering, University of California, Davis, CA;Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong;Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong;Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong
Venue:
IEEE Transactions on Signal Processing
Year:
2010

Citing 20
Cited 0

Timing synchronization in decode-and-forward cooperative communication systems

IEEE Transactions on Signal Processing
Network beamforming using relays with perfect channel information

IEEE Transactions on Information Theory
Design and analysis of feedforward symbol timing estimators based on the conditional maximum likelihood principle

IEEE Transactions on Signal Processing
Optimizations of a MIMO Relay Network

IEEE Transactions on Signal Processing - Part II
Conditional maximum likelihood timing recovery: estimators andbounds

IEEE Transactions on Signal Processing
Joint Tx-Rx beamforming design for multicarrier MIMO channels: a unified framework for convex optimization

IEEE Transactions on Signal Processing
Distributed MMSE Relay Strategies for Wireless Sensor Networks

IEEE Transactions on Signal Processing - Part I
Linear transmit processing in MIMO communications systems

IEEE Transactions on Signal Processing - Part I
Distributed Beamforming for Relay Networks Based on Second-Order Statistics of the Channel State Information

IEEE Transactions on Signal Processing
Exact symbol error probability of a Cooperative network in a Rayleigh-fading environment

IEEE Transactions on Wireless Communications
Symbol error probabilities for general Cooperative links

IEEE Transactions on Wireless Communications
Distributed Space-Time Coding in Wireless Relay Networks

IEEE Transactions on Wireless Communications
Optimal Design of Non-Regenerative MIMO Wireless Relays

IEEE Transactions on Wireless Communications
On channel estimation and optimal training design for amplify and forward relay networks

IEEE Transactions on Wireless Communications - Part 2
Space-time trellis codes with asynchronous full diversity up to fractional symbol delays

IEEE Transactions on Wireless Communications
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks

IEEE Transactions on Information Theory
On Capacity Under Receive and Spatial Spectrum-Sharing Constraints

IEEE Transactions on Information Theory
Using Orthogonal and Quasi-Orthogonal Designs in Wireless Relay Networks

IEEE Transactions on Information Theory
Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks

IEEE Journal on Selected Areas in Communications
Synchronization and packet separation in wireless ad hoc networks by known modulus algorithms

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	35.68

Visualization

Abstract

This paper proposes a general framework to effectively estimate the unknown timing and channel parameters, as well as design efficient timing resynchronization algorithms for asynchronous amplify-and-forward (AF) cooperative communication systems. In order to obtain reliable timing and channel parameters, a least squares (LS) estimator is proposed for initial estimation and an iterative maximum-likelihood (ML) estimator is derived to refine the LS estimates. Furthermore, a timing and channel uncertainty analysis based on the Cramér-Rao bounds (CRB) is presented to provide insights into the system uncertainties resulted from estimation. Using the parameter estimates and uncertainty information in our analysis, timing resynchronization algorithms that are robust to estimation errors are designed jointly at the relays and the destination. The proposed framework is developed for different AF systems with varying degrees of timing misalignment and channel uncertainties and is numerically shown to provide excellent performances that approach the synchronized case with perfect channel information.