Results 241 to 250 of about 12,176 (262)

Compress-and-Forward via Multilevel Coding

2019 IEEE International Symposium on Information Theory (ISIT), 2019
We investigate the performance of discrete (coded) modulations in the full-duplex compress-and-forward relay channel using multilevel coding. We numerically analyze the rates assigned to component binary codes of all levels. LDPC codes are used as the component binary codes to provide error protection.
Heping Wan, Anders Host-Madsen, Aria Nosratinia   +2 more
openaire   +1 more source

When is compress-and-forward optimal?

2010 Information Theory and Applications Workshop (ITA), 2010
In many known examples where compress-and-forward (CF) for relay networks is capacity achieving, it is only trivially so, i.e., it falls back to hashing without quantization. A potentially better strategy is to decode as much as possible and to compress the residual information, i.e., a combination of decode-and-forward (DF) and CF (Cover and El Gamal ...
Si-Hyeon Lee, Sae-Young Chung
openaire   +1 more source

Optimal data compression and forwarding in wireless sensor networks

IEEE Communications Letters, 2010
In this letter, we present a Linear Programming framework for modeling dynamic data compression and decompression in conjunction with flow balancing in wireless sensor networks. Using the developed framework, we investigated the sensor network lifetimes for different network sizes with various data compression and flow balancing strategies. Our results
Tavli, Bulent, Bagci, Ibrahim Ethem, Ceylan, Onur   +2 more
openaire   +2 more sources

Compress-and-Forward Relaying Over Parallel Gaussian Channels

2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, 2007
We propose a compress-and-forward (CF) strategy for relaying over parallel Gaussian channels. The proposed CF strategy compresses received signals at the relay under a constraint on the product of their allowable distortions and forwards them to the destination over all subchannels. Then, power allocation over all subchannels at both the source and the
Woohyuk Chang, Shivaprasad Kotagiri, J. Nicholas Laneman, Sae-Young Chung, Yong H. Lee   +4 more
openaire   +1 more source

Compressed-and-forward: Compressive sensing for cooperative communication

2012 International Symposium on Intelligent Signal Processing and Communications Systems, 2012
Cooperative communication has been shown that it is an effective way to achieve spatial diversity in order to combat the user-outage caused by effects fading channel. Except for amplify-and-forward (AF) and decode-and-forward (DF), compressed-and-forward (CF) is also an efficient forwarding strategy.
Chia-Hung Yeh, Yu-Liang Lin, Cheng-Chih Liu, Wan-Jen Huang   +3 more
openaire   +1 more source

Generalized compress-and-forward strategy for relay networks

2008 IEEE International Symposium on Information Theory, 2008
In this paper, we present a new generalization of the well- known Compress-and-Forward strategy for relay networks. We propose an offset decoding at destination, where destination considers an ordered partition of relays and decodes information of any partition with the help of information from prior partitions.
Mohammad Hossein Yassaee, Mohammad Reza Aref   +1 more
openaire   +1 more source

A novel decoding structure in compress-and-forward systems

Proceedings of the 6th International Wireless Communications and Mobile Computing Conference, 2010
A novel joint decompression and forward error correction (FEC) decoding structure for a compress-and-forward relay system is proposed. We notice the possibility of iterative processing between the decompressor and the FEC decoder for the original source information and propose a turbo-like structure to allow interaction and extrinsic information ...
Yinan Qi, Reza Hoshyar, Rahim Tafazolli
openaire   +1 more source

Packet-wise compression and forwarding of industrial network captures

2017 9th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), 2017
Network traffic captures are necessary for a variety of security applications like identification of malicious patterns or training of intrusion detection systems. While monitoring of enterprise networks is common practice, it is rarely done for industrial production environments due to low bandwidth, confidential production data and sensitive legacy ...
Gerhard Hansch, Peter Schneider, Sven Plaga   +2 more
openaire   +1 more source

Joint decode/compress and forward based cooperative multiple access

2012 20th Signal Processing and Communications Applications Conference (SIU), 2012
In this paper, we develop encoding and decoding strategies for a two user cooperative multiple access channel, based on the joint use of decode-forward and compress-forward techniques. We derive the resulting achievable rate expressions. We compare our results with some known rate regions for bidirectional cooperation, and demonstrate through ...
Mehmet Gunes, Onur Kaya
openaire   +1 more source

Compress-and-forward strategy for Causal Cognitive Interference Channel

2010 IEEE International Conference on Information Theory and Information Security, 2010
In this paper, we consider Causal Cognitive Interference Channel (CC-IFC), wherein the cognitive user overhears the channel and exploits knowledge of the primary user's message from the causally received signals. We propose a coding scheme which combines Compress-and-Forward (CF) strategy with Marton coding with common information at the cognitive user.
Mahtab Mirmohseni, Bahareh Akhbari, Mohammad Reza Aref   +2 more
openaire   +1 more source