Results 11 to 20 of about 3,430 (173)
Area energy consumption in cooperative decode and forward (DF) relaying scenarios
, 2011 Energy efficiency in cellular networks has become an important design parameter in recent research works due to the global climate change and growing demand for very high data rates in future cellular systems. In our work, the main objective is to reduce
ur Rehman Ahsin, Tafzeel, +1 more
core +8 more sources
Packet-reliability-based decode-and-forward distributed space-time shift keying [PDF]
, 2010 Motivated by the recent concept of Spatial Modulation (SM), we propose a novel Distributed Space-Time Shift Keying (D–STSK) scheme, where the SM concept is extended to include both the space and time dimensions for the sake of achieving a flexible ...
Sugiura, Shinya +2 more
core +2 more sources
NOMA-Based User Cooperation With Incremental Hybrid Forwarding Protocols
IEEE Open Journal of the Communications Society, 2021 In this paper, we investigate the performance of a non-orthogonal multiple access (NOMA) wireless system, in which signal transmission of a far user is assisted by a near user.
Suyue Li +5 more
doaj +1 more source
Power Allocation for Cognitive Collaborative Network Based on Adaptive Relay [PDF]
Jisuanji gongcheng, 2017 In relayed transmission systems,power allocation algorithm based on Decode and Forward(DF) increases error in case of incorrect decoding of the information symbols,and the one based on Amplify Forward(AF) amplifies the noise.In order to solve the problem,
LUO Ji
doaj +1 more source
Exact and Approximated Outage Probability Analyses for Decode-and-Forward Relaying System Allowing Intra-link Errors [PDF]
, 2014 In this paper, we theoretically analyze the outage probability of decode-and-forward (DF) relaying system allowing intra-link errors (DF-IE), where the relay always forwards the decoder output to the destination regardless of whether errors are detected ...
Matsumoto, Tad +3 more
core +1 more source
Energy Efficient Joint Power Optimization for Full-Duplex Relaying
IEEE Access, 2019 Full-duplex (FD) relaying is a promising technology for the next generation communication systems. In this paper, we aim to jointly optimize the source and relay transmit powers to maximize the energy efficiency (EE) for both amplify-and-forward (AF) and
Zhenyao He +3 more
doaj +1 more source
How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR
EURASIP Journal on Advances in Signal Processing, 2007 We propose some new adaptive amplify-and-forward (AF) and decode-and-forward (DF) protocols using a selection. The new selection criterion is a function of the instantaneous capacities of all possible transmission schemes (with or without cooperation ...
Jean-Claude Belfiore +2 more
doaj +1 more source
IET Communications, 2018 This study investigates outage probability (OP) of a generalised decode‐and‐forward‐based multiuser spectrum sharing relay system. In practice, the secondary users are exposed to the primary transmitters ’ signals which can measurably affect the OP in the secondary system.
Omid Moghimi Kandelusy +1 more
openaire +2 more sources
IEEE Photonics Journal, 2022 The scheme of combining relay and optical code division multiple access (OCDMA) is one of the effective methods to improve the reliability and security of free space optical (FSO) communication system.
Jianhua Ji +4 more
doaj +1 more source
Coherent versus non-coherent decode-and-forward relaying aided cooperative space-time shift keying
, 2011 Motivated by the recent concept of Space-Time Shift Keying (STSK), we propose a novel cooperative STSK family, which is capable of achieving a flexible rate-diversity tradeoff, in the context of cooperative space-time transmissions. More specifically, we
Sheng Chen +9 more
core +2 more sources