Results 241 to 250 of about 20,715 (264)

Soft Decode and Forward Improves Cooperative Communications

1st IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, 2005., 2006
Mobile receivers can benefit from an increased spatial diversity through cooperation. Two relaying techniques are typically used: either amplify and forward (AF) or decode and forward (DF). This contribution presents a new technique, which combines the main advantages of both AF and DF.
H.H. Sneessens, L. Vandendorpe
openaire   +1 more source

Bounding of MAP decode and forward relaying

2010 IEEE International Symposium on Information Theory, 2010
We formulate the maximum a posteriori (MAP) rule for the decode-and-forward transmission strategy operating with a noisy relay. From the MAP rule we derive an analytical bound on the error probability, taking into account decoding errors at the relay.
Ingmar Land, Alexandre Graell i Amat, Lars K. Rasmussen   +2 more
openaire   +2 more sources

Decode‐and‐forward with full‐duplex relaying

International Journal of Communication Systems, 2011
SUMMARYThis paper addresses the full‐duplex relaying. Some expressions for outage and average capacity of a two‐hop cooperative system with a full‐duplex relay are derived under an independent but not identically distributed Rayleigh fading environment. Using these expressions, we provide the performance analysis without Monte Carlo simulations.
Xianyi Rui, Jia Hou, Liulei Zhou
openaire   +1 more source

Dynamic Decode and Forward with Network Coding

2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012
This paper is divided into two parts. In the first part, we analyze outage probability of dynamic decode and forward (DDF) with network coding (NC) and compare outage probability with using NC and without using NC. In the second part, we use MATLAB programming language to simulate our system model.
Wei-Cheng Liu, Yu-Neng Chen
openaire   +1 more source

Dynamic Selective Decode and Forward in wireless relay networks

2015 7th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2015
In this paper, we propose a practical code design for a new relaying protocol, coined Dynamic Selective Decode-and-Forward (D-SDF), in half-duplex slow fading Multiple Access Multiple Relay Channel (MAMRC), defined as follows: (1) Multiple statistically independent sources communicate with a single destination with the help of multiple half-duplex ...
Mohamad, Abdulaziz, Visoz, Raphaël, Berthet, Antoine O.   +2 more
openaire   +1 more source

Enhanced MRC for Decode-and-Forward Cooperative Diversity Systems

IEEE Transactions on Wireless Communications, 2012
In this letter, we propose a novel enhanced maximal-ratio combining (E-MRC) scheme for multi-branch decode-and-forward (DF) cooperative diversity systems consisting of a source, a destination, and multiple relays. This scheme employs adjustable parameters at the relays and the destination which enable this scheme to appropriately adapt to variations in
Nasri, A., Schober, R., Uysal, Murat
openaire   +2 more sources

Decode‐and‐forward with partial relay selection

International Journal of Communication Systems, 2010
AbstractExact expressions for outage probability and symbol error rate are presented for a decode‐and‐forward cooperative network with partial relay selection. An independent but not identically distributed Nakagami‐m fading environment is considered. Numerical and simulated results show the validity of the analytical results.
openaire   +1 more source

Bilayer LDPC Convolutional Codes for Decode-and-Forward Relaying

IEEE Transactions on Communications, 2013
In this paper we present bilayer LDPC convolutional codes for half-duplex relay channels. Two types of codes, bilayer expurgated LDPC convolutional codes and bilayer lengthened LDPC convolutional codes, are proposed for decode-and-forward (DF) relaying.
Si Z., Thobaben R., Skoglund M.
openaire   +2 more sources

Cooperative Transmission Schemes for Decode-and-Forward Relaying

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007
We consider a low mobility cellular relaying system downlink where two mobile users are served by two neighboring decode-and-forward relays concurrently using the same frequency channel. We propose two cooperative relaying transmission schemes where each relay can choose proper precoding vectors based on its local channel knowledge to transmit data in ...
Jian Zhao, Marc Kuhn, Armin Wittneben, Gerhard Bauch   +3 more
openaire   +1 more source

Decode-and-Forward Cooperative Networks with Multiuser Diversity

MILCOM 2006, 2006
In this paper, we first present a hard decision detector (HDD) for the cooperative networks with the decode-and-forward protocol. Compared to the optimum maximum likelihood (ML) estimator, the proposed HDD achieves the same diversity order while having much lower complexity.
Zhihang Yi, Il-min Kim
openaire   +1 more source