Optimal Training Design for Channel Estimation in Amplify and Forward Relay Networks
- 1 November 2007
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 1930529X,p. 4015-4019
- https://doi.org/10.1109/glocom.2007.763
Abstract
In this paper, we study training based channel estimation for relay networks using the amplify-and-forward (AF) transmission scheme. We first point out that separately estimating the channel from source to relay and the channel from relay to destination incurs several problems. We then propose a new estimation scheme that directly estimates the overall channel from source to destination. The proposed channel estimation well matches the AF based space time coding that was developed recently. Both linear least-square estimator and minimum mean- square-error estimator are studied. The corresponding optimal training sequences and the optimal precoding matrices are also derived.Keywords
This publication has 13 references indexed in Scilit:
- On channel estimation and optimal training design for amplify and forward relay networksIEEE Transactions on Wireless Communications, 2008
- Distributed space-time block codingIEEE Transactions on Communications, 2006
- Training-based MIMO channel estimation: a study of estimator tradeoffs and optimal training signalsIEEE Transactions on Signal Processing, 2006
- Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networksIEEE Transactions on Information Theory, 2003
- Layered space-time architecture for wireless communication in a fading environment when using multi-element antennasBell Labs Technical Journal, 2002
- Capacity of Multi‐antenna Gaussian ChannelsEuropean Transactions on Telecommunications, 1999
- Applications of second-order cone programmingLinear Algebra and its Applications, 1998
- Space-time codes for high data rate wireless communication: performance criterion and code constructionIEEE Transactions on Information Theory, 1998
- Semidefinite ProgrammingSIAM Review, 1996
- Capacity theorems for the relay channelIEEE Transactions on Information Theory, 1979