Results 221 to 230 of about 50,398 (254)

Code Combining in Cooperative Communication

IEICE Transactions on Communications, 2008
It is well known that cooperative transmission among the single antenna wireless nodes and a proper combining at destination can obtain spatial diversity. In this paper, we introduce a new form of combining technique in cooperative communication.
Asaduzzaman, Hyung Yun Kong
openaire   +1 more source

Cooperative regions and partner choice in coded Cooperative systems

IEEE Transactions on Communications, 2006
User cooperation is an efficient approach to obtain diversity in both centralized and distributed wireless networks. In this paper, we consider a coded cooperative system under quasi-static Rayleigh fading and investigate the partner-choice problem.
Zinan Lin 0003, Elza Erkip, Andrej Stefanov   +2 more
openaire   +1 more source

Cooperative Concatenated Coding for Wireless Systems

2007 IEEE International Conference on Communications, 2007
Cooperative transmission has been of growing interest recently where users take advantage of each other's resources for better overall performance. In this paper, coded cooperation for wireless networks is considered and a novel cooperative concatenated coding strategy is proposed.
Ernest S. Lo, Khaled Ben Letaief
openaire   +5 more sources

Source and Channel Coding for Cooperative Relaying

IEEE Transactions on Information Theory, 2005
We consider the end-to-end distortion achieved by a half-duplex relay system where a continuous amplitude source is transmitted over a quasi-static Rayleigh fading channel. We investigate layered source coding (LS) where different source layers are sent at different times.
Deniz Gündüz, Elza Erkip
openaire   +3 more sources

Coded cooperation using LDPC codes

2009 Global Mobile Congress, 2009
In this paper, a novel scheme of coded cooperation using LDPC codes is presented. Two decoding methods are proposed. A simple upper bound of this scheme is introduced based on the union bound. The performance of these two methods is evaluated and compared by simulation.
Dongfeng Zhao, Daoben Li
openaire   +1 more source

Cooperative Source Coding with Encoder Breakdown

2007 IEEE International Symposium on Information Theory, 2007
This paper provides an inner bound to the rate- distortion region of a source coding setup in which two encoders are allowed some collaboration to describe a pair of discrete memoryless sources. We further require some robustness in case one of the encoders breaks down. This is modeled by having a second decoder, observing the messages from only one of
Vasudevan, Dinkar, Perron, Etienne
openaire   +1 more source

Cooperative Multiple Trellis Coded Modulation

MILCOM 2006, 2006
In this paper, we consider the design of cooperative multiple trellis coded modulation (CMTCM) schemes over Rayleigh fading channels. We design cooperative multiple trellis codes using asymmetric constellations that provide significant gains over non-cooperative coded modulation without sacrificing the data rate and bandwidth consumption.
Jialing Li, Andrej Stefanov
openaire   +1 more source

Superposition Coded Modulation for Cooperative Communications

2012 IEEE Vehicular Technology Conference (VTC Fall), 2012
A Turbo Trellis-Coded Modulation (TTCM) aided superposition modulation scheme is conceived for a Decode-and-Forward (DAF) based cooperative communication system. More specifically, two source nodes communicate simultaneously with the same destination node via a relay node.
Hua Sun, Soon Xin Ng, Lajos Hanzo
openaire   +1 more source

Network coded noncoherent cooperative communications

2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
In recent years, network coding has received significant attention as an innovative approach that improves the spectral efficiency of wireless communication systems. The Multiple Access Relay Channel (MARC) where multiple users communicate with a common destination via a relay, is one of the important network coding applications in wireless cooperative
Muhammet Ali Karabulut, Haci Ilhan, Özgür Özdemir   +2 more
openaire   +3 more sources

Human Cooperation and the Complexity of Moral Codes

The 2018 Conference on Artificial Life, 2018
This work was supported by FCT Portugal (Grants: SFRH/BD/94736/2013, PTDC/EEI-SII/5081/2014, PTDC/MAT/STA/3358/2014, UID/BIA/04050/2013 and UID/CEC/50021/2013).
Fernando P. Santos, Jorge M. Pacheco, Francisco C. Santos   +2 more
openaire   +2 more sources