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Co-operative Amplify and Forward Relaying Strategy for Mobile Adhoc Network for Efficient Communication
2017
IJIREEICE
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In this paper, we will discuss about the cooperative communications and analyze the performance of amplify and forward protocol for single relay model in idealistic condition which gives way forward to ...
Such an arrangement creates a virtual MIMO (multiple-input and multiple-output) system [2] [3] . ...
Amplify and Forward Strategy As the name suggests, in the Amplify and Forward technique simply amplify the signal received by the relay and then forward it to the destination. ...
doi:10.17148/ijireeice.2017.5204
fatcat:qriuie2azfbafhpbyjb4w7ipaa
Wireless Cooperative Networks
2008
EURASIP Journal on Advances in Signal Processing
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Ikki and M. H. Ahmed. They consider an amplify-and-forward (AF) cooperative diversity system where a source node communicates with a ...
On the other hand, the cooperation among nodes, as in the case of wireless sensor networks, allows a distributed space-time signal processing which enables, among others, environmental monitoring, localization ...
Chockalingam consider cooperative space-frequency block-coded orthogonal frequencydivision multiplexing (SFBC-OFDM) networks with amplify-and-forward (AF) and decode-and-forward (DF) protocols at the relays ...
doi:10.1155/2008/810149
fatcat:c6vwhztbpjaglnjnz2fsdpgvam
On the Error Rate and Delay Performance Analysis of OFDM based Cooperative Protocol for 802.11 Networks
2013
INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY
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We develop and analyze a distributed space-frequency block code-orthogonal frequency division multiplexing protocol for cooperative communications in 802.11 networks. ...
Space frequency block codes (SFBC) are spread over OFDM subcarriers instead of OFDM symbols to compensate for the small coherence time. ...
[1] indicated that adaptive decode-and-forward strategies offer the same performance as fixed amplify-and-forward. Meng Yu et al. ...
doi:10.24297/ijct.v10i2.7001
fatcat:v2uvz3xrxzaejhgem3ztalx2ia
Adaptive Distributed Space-Time Coding for Cooperative MIMO Relaying Systems with Limited Feedback
2013
2013 IEEE 77th Vehicular Technology Conference (VTC Spring)
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An adaptive distributed space-time coding (DSTC) scheme is proposed for two-hop cooperative MIMO networks. ...
Linear minimum mean square error (MMSE) receive filters and adjustable matrices subject to a power constraint are considered with an amplify-and-forward (AF) cooperation strategy. ...
algorithm [3] and various distributed space-time coding (DSTC) schemes in [4] , [5] and [16] can be employed. ...
doi:10.1109/vtcspring.2013.6691856
dblp:conf/vtc/PengLS13
fatcat:m67446mfmje4xj67b3eaq63ko4
Adaptive Distributed Space-Time Coding in Cooperative MIMO Relaying Systems using Limited Feedback
[article]
2013
arXiv
pre-print
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Linear minimum mean square error (MMSE) receiver filters and randomized matrices subject to a power constraint are considered with an amplify-and-forward (AF) cooperation strategy. ...
An adaptive randomized distributed space-time coding (DSTC) scheme is proposed for two-hop cooperative MIMO networks. ...
space-time coding (DSTC) schemes in [2] , [3] and [19] can be employed. ...
arXiv:1303.4384v1
fatcat:zmeljasen5d3lgkg4aqgxu5q4a
Distributed Space-Time Systems
2008
EURASIP Journal on Advances in Signal Processing
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Does distributed space-time coding (DSTC) work well with OFDMA as it does with standard MIMO systems? ...
What are good space-time codes for distributed antennas? What are the channel models for this problem? What are good strategies for channel estimation? How do we do precoding? ...
The paper "Distributed space-time block coded transmission with imperfect channel estimation: achievable rate and power allocation" by L. Musavian and S. ...
doi:10.1155/2008/891036
fatcat:7s27pofeubdqrabiz3qyx7ngkm
Adaptive Randomized Distributed Space-Time Coding in Cooperative MIMO Relay Systems
[article]
2013
arXiv
pre-print
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Linear minimum mean square error (MMSE) receivers and an amplify-and-forward (AF) cooperation strategy are considered. ...
An adaptive randomized distributed space-time coding (DSTC) scheme and algorithms are proposed for two-hop cooperative MIMO networks. ...
In this paper, we propose an adaptive randomized distributed space-time coding scheme and algorithms for a two-hop cooperative MIMO relaying system with the AF protocol and linear MMSE receivers. ...
arXiv:1303.4120v1
fatcat:qipl5li5undurp7na73md46s3i
Distributed MIMO technologies in cooperative wireless networks
2011
IEEE Communications Magazine
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Commonly used distributed space-time codes are distributed space-time block codes and distributed space-time trellis codes. ...
AMPLIFY-AND-FORWARD The simplest relay protocol is amplify-and-forward (AF) [6] . In AF, each relay amplifies the received noisy signals and forwards them to the destination. ...
doi:10.1109/mcom.2011.5762801
fatcat:vktt3566unbrrat773qveu3fl4
Simple Cooperative Relaying Strategies for WiMAX Communication System
2009
2009 IEEE Wireless Communications and Networking Conference
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The cooperative schemes proposed combine the Amplify and Forward (AAF) and the Decode and Forward (DAF) algorithm with Delay Diversity (DD) and Cyclic Delay Diversity (CDD) techniques, in order to exploit ...
We investigated the pros and cons of each scheme, comparing the assumptions which are required and the simulation results with respect to two cooperative implementations of the Alamouti scheme. ...
In OFDM system Alamouti scheme can be implemented both in the time domain (STBC, Space Time Block Coding) and in the frequency domain (SFBC, Space Frequency Block Coding) [11] [12] [13] . ...
doi:10.1109/wcnc.2009.4917966
dblp:conf/wcnc/MorosiMFRJ09
fatcat:lqgx4w6bdbdlxhfktnqnibzfzi
A Low Complex Modified Golden Code in a Cooperative Relaying System
2014
International Journal of Computer Networks & Communications
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Concerning with the physical layer issues, in this paper it is focussed on with providing a better space time block coding (STBC) scheme and incorporating it in the cooperative relaying nodes to upgrade ...
The single relay cooperative STBC consisting of source, relay and destination are considered. The cooperative protocol strategy considered in the relay node is Decode and forward (DF) protocol. ...
been discussed in [10] .In [11] , the space time block codes for a half-duplex multiple input multiple output (MIMO) and non-orthogonal amplify and forward (NAF) cooperative diversity scheme with multiple ...
doi:10.5121/ijcnc.2014.6106
fatcat:lutjygtmyvhojnlhiackzvsh6y
Hybrid Turbo FEC/ARQ Systems and Distributed Space-Time Coding for Cooperative Transmission
2005
International Journal of Wireless Information Networks
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of the relay (decode&forward or amplify&forward) and the number of antennas at each terminal. ...
This design involves the definition of the type of retransmission (incremental redundancy, repetition coding), the design of the distributed space-time codes, the error correcting scheme, the operation ...
Distributed space-time block codes Distributed space-time block codes are based on the space-time block codes applied to distributed antennas. ...
doi:10.1007/s10776-005-0012-z
fatcat:mqz3zr7g3ncvld2i6cchkuq7ru
On the performance of cooperative diversity protocols in practical wireless systems
2003
2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484)
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As with other diversity schemes (e.g. space time block codes), our results for uncoded transmission can easily be combined with FEC techniques to obtain excellent error rate performance. ...
Our findings imply that under these conditions full second order diversity can only be achieved by using adaptive versions of cooperative protocols. ...
Consider, for example, the case of channel coding or space-time codes for a higher numbers of antennas with R < 1. ...
doi:10.1109/vetecf.2003.1285922
fatcat:cvduyoxq6veixgnebswccojr34
Study of Buffer-Aided Space-Time Coding for Multiple-Antenna Cooperative Wireless Networks
[article]
2015
arXiv
pre-print
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A maximum likelihood receiver and adjustable code vectors are considered subject to a power constraint with an amplify-and-forward cooperation strategy. ...
In this work we propose an adaptive buffer-aided space-time coding scheme for cooperative wireless networks. ...
In traditional cooperative systems, amplify-and-forward (AF), decode-andforward (DF) or compress-and-forward (CF) [4] cooperation strategies are designed with the help of multiple relay nodes. ...
arXiv:1506.08487v2
fatcat:5htyttjsgjekdloswxr7a7u6c4
A Review on Cooperative Communication Protocols in Wireless World
2013
International Journal of Wireless & Mobile Networks
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Cooperative communications can efficiently combat the severity of fading and shadowing through the assistance of relays. ...
Future generations of cellular communications requires higher data rates and a more reliable transmission link with the growth of multimedia services, while keeping satisfactory quality of service, . ...
In [36] , outage performance of MIMO relay channel has been investigated when source and relay use same orthogonal space time block code. ...
doi:10.5121/ijwmn.2013.5209
fatcat:pfwbtdjc4vh2fc7qvuzaplstfy
Distributed On-Off Power Control for Amplify-and-Forward Relays with Orthogonal Space-Time Block Code
2011
IEEE Transactions on Wireless Communications
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Index Terms-Orthogonal space-time block codes (OSTBC), amplify-and-forward (AF), parallel relay network, power control. ...
We call this transmission protocol as distributed orthogonal space-time block coded adaptive amplifyand-forward (DOSTBC-AAF). ...
GCOD COMBINED WITH ADAPTIVE AMPLIFY-AND-FORWARD We apply the half symbol-rate GCOD code to the parallel relay network, with each relay acts as an antenna. ...
doi:10.1109/twc.2011.040511.101285
fatcat:53fqqo3pvvcnvckpvcypth2i2a
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