Coding for the Nonorthogonal Amplify-and-Forward Cooperative Channel
نویسندگان
چکیده
منابع مشابه
Opportunistic nonorthogonal amplify-and-forward cooperative communications
Introduction: Cooperative communications [1] create diversity gains for network users with a single antenna. The classical cooperative scheme consists of two orthogonal time slots (TS): a broadcasting TS for a source (S) to transmit its signal to the intended destination (D), and a relaying TS for a relay (R) to retransmit S’s signal to D. There are amplify-and-forward (AF) and decode-and-forwa...
متن کاملDistributed Space-Time Block Coding for Amplify-and- Forward Cooperative Networks
A robust way to combat multipath fading phenomena in wireless communications is to implement diversity techniques. Diversity is achieved by providing the receivers multiple independent replicas of the same information-bearing symbols through space, time, or frequency. Recently, a new type of diversity, so-called cooperative diversity, has been proposed in order to provide diversity when the wir...
متن کاملExploiting a priori information for iterative channel estimation in block-fading amplify-and-forward cooperative networks
In an amplify-and-forward cooperative network, a closed-form expression of the a priori distribution of the complex-valued gain of the global relay channel is intractable, so that a priori information is often not exploited for estimating this gain. Here, we present two iterative channel gain and noise variance estimation algorithms that make use of a priori channel information and exploit the ...
متن کاملSemi-blind Channel Estimation for Amplify-and-forward Cooperative Relay Networks
We consider channel estimation in amplify-andforward wireless relay networks when coherent distributed spacetime coding is performed at the relays. Employing minimum mean-square-error signal detection at the destination, we first bring clearance on the detector formulation when only partial channel state information is available. We then consider channel estimation and propose to use a semi-bli...
متن کاملCyclic Delay Pilot Channel Estimation for Space-Time Block Coded Cooperative Amplify-and-Forward Relay
Recently, we proposed space-time block coded (STBC) cooperative amplify-and-forward (Co-AF) relay (STBC-Co-AF relay) and showed that STBC-Co-AF relay outperforms Co-AF relay while keeping relay station structure simple. However, the past study for STBC-Co-AF relay assumed channel state information (CSI) of the channels of the source node-to-the relay node and the relay node-to-the destination n...
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 Information Theory
سال: 2010
ISSN: 0018-9448
DOI: 10.1109/tit.2010.2046247