Results 251 to 260 of about 105,769,074 (273)

A decoding procedure for compress-and-forward and quantize-and-forward relaying

2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2012
In this paper, a decoding procedure is developed for both the compress-and-forward (CF) and the short message quantize-and-forward (QF-SM) relaying schemes. This procedure is based on exploiting a common feature of the mapping used by both schemes to determine the relay output from the estimate of its input.
Kevin Luo, Ramy H. Gohary, Halim Yanikomeroglu   +2 more
openaire   +1 more source

An Optimality-Robustness Tradeoff in the Compress-and-Forward Relay Scheme

2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010
The compress-and-forward relay scheme developed by (Cover and El Gamal, 1979) is modified by realizing that it is not necessary for the destination to decode the compressed observation of the relay; and even if the compressed observation is to be decoded, it can be more easily done by joint decoding with the original message, rather than in a ...
Xiugang Wu, Guangzhe Fan, Liang-Liang Xie   +2 more
openaire   +1 more source

Compressing IP forwarding tables with fast and bounded update

2015 IEEE 23rd International Symposium on Quality of Service (IWQoS), 2015
The size of Forwarding Information Base (FIB) maintained at backbone routers is experiencing an exponential growth, and various solutions have been proposed in the literature. The main shortcoming of FIB compression is the update overhead. Only when the update speed of FIB compression algorithms is sufficiently fast and bounded, the probability of ...
Yuanyuan Zhang 0006, Mingwei Xu 0001, Fei Liang, Ning Wang 0001, Penghan Chen   +4 more
openaire   +1 more source

Multi-level compress and forward coding for half-duplex relays

2012 IEEE Global Communications Conference (GLOBECOM), 2012
This paper presents a multi-level compress and forward coding scheme for a three-node relay network in which all transmissions are constrained to be from an M-ary PAM constellation. The proposed framework employs a uniform scalar quantizer followed by Slepian-Wolf coding at the relay.
Jaweria Amjad, Momin Uppal, Saad B. Qaisar   +2 more
openaire   +1 more source

On the Performance of Compressed Interference Forwarding for Uplink Base Station Cooperation

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference, 2009
The capacity of today's cellular mobile communications systems is mainly limited by inter-cell interference. Multi-cell joint transmission or joint detection schemes are means to overcome this limitation and to actively exploit signal propagation across cell borders rather than treating it as noise.
Michael Grieger, Patrick Marsch, Gerhard P. Fettweis, John M. Cioffi   +3 more
openaire   +1 more source

Decode-compress and forward relay: AWGN and constellation constrained channels

2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2017
Even though there exists a lot of different transmission techniques, the capacity of the general relay channel is still unknown. This paper shows that combining decode-and-forward (DF) with compress-and-forward (CF) can have a performance advantage over each of the two techniques individually.
Ahmed Attia Abotabl, Aria Nosratinia
openaire   +1 more source

Path compression in forwarding-based reliable mobile agent communications

2003 International Conference on Parallel Processing, 2003. Proceedings., 2003
We concern with the design of efficient algorithms for mobile agent communications. We first describe a novel mailbox-based scheme for flexible and adaptive message delivery in mobile agent systems and a specific adaptive protocol derived from the scheme. Then we present the design and verification of a path compression and garbage collection algorithm
Jiannong Cao 0001, Liang Zhang 0027, Xinyu Feng 0001, Sajal K. Das 0001   +3 more
openaire   +1 more source

A layered detect-compress-and-forward coding scheme for the relay channel

2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2017
We develop a practical layered detect-compress-and-forward (LDCF) coding framework for a three-node relay network. Assuming all transmissions to be mapped to Quadrature Amplitude Modulation (QAM) constellations, the LDCF framework at the relay utilizes maximum-likelihood detection, followed by a multi-level convolutional coding structure to achieve ...
Fawad Ud Din, Jawwad Nasar Chattha, Irfan Ullah, Momin Uppal   +3 more
openaire   +1 more source

Compress-and-Forward Rates for the Gaussian Relay with ISI and Colored Noise

2010 IEEE Global Telecommunications Conference GLOBECOM 2010, 2010
The achievable rate of a relay channel with inter- symbol interference and additive colored Gaussian noise is examined under an input power constraint and the compress-and-forward (CF) strategy at the relay. Using classical techniques, it is shown that the circular degraded relay channels is equivalent to that of the linear one in the limit of infinite
Urbashi Mitra, Chiranjib Choudhuri
openaire   +1 more source

Compress-and-Forward Relaying: Prototyping and Experimental Evaluation Using SDRs

2016 IEEE 84th Vehicular Technology Conference (VTC-Fall), 2016
This paper presents a prototype implementation and experimental performance evaluation of compress- and-forward (CF) relaying using software-defined radios. Under QPSK transmissions from all nodes, the relay demodulates the received signal before applying distributed joint source-channel coding (DJSCC) implemented with the help of an off-the- shelf ...
Irfan Ullah, Fawad Ud Din, Jawwad Nasar Chattha, Momin Uppal   +3 more
openaire   +1 more source