Results 1 to 10 of about 563,494 (333)

Cooperative Spectrum Sensing with Selection Diversity Reception in Cognitive Radio [PDF]

open access: diamond, 2021
Md. Abu Hadi Noor Ali Khan   +70 more
openalex   +1 more source

Selection combining for noncoherent decode-and-forward relay networks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2011
This paper studies a new decode-and-forward relaying scheme for a cooperative wireless network composed of one source, K relays, and one destination and with binary frequency-shift keying modulation.
Nguyen Ha, Nguyen Ha
doaj  

Noncoherent Low-Decoding-Complexity Space-Time Codes for Wireless Relay Networks

open access: yes, 2007
The differential encoding/decoding setup introduced by Kiran et al, Oggier et al and Jing et al for wireless relay networks that use codebooks consisting of unitary matrices is extended to allow codebooks consisting of scaled unitary matrices.
Rajan, B. Sundar, Rajan, G. Susinder
core   +1 more source

Outage analysis of blind cooperative diversity [PDF]

open access: yes2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications, 2009
ABSTRACTMobile users with single antennas can still take advantage of spatial diversity through cooperative space–time‐encoded transmission. In this paper, we considered a scheme in which a relay chooses to cooperate only if its source–relay channel is of an acceptable quality, and we evaluate the usefulness of relaying when the source acts blindly and
Kamel Tourki, Mohamed-Slim Alouini
openaire   +2 more sources

Cooperative Non-Orthogonal Multiple Access in 5G Systems

open access: yes, 2015
Non-orthogonal multiple access (NOMA) has recently received considerable attention as a promising candidate for 5G systems. A key feature of NOMA is that users with better channel conditions have prior information about the messages of the other users ...
Ding, Zhiguo, Peng, Mugen, Poor, H. V.
core   +1 more source

Distributed Linear Convolutional Space-Time Coding for Two-Relay Full-Duplex Asynchronous Cooperative Networks [PDF]

open access: yes, 2013
In this paper, a two-relay full-duplex asynchronous cooperative network with the amplify-and-forward (AF) protocol is considered. We propose two distributed space-time coding schemes for the cases with and without cross-talks, respectively.
Liu, Yi, Xia, Xiang-Gen, Zhang, Hailin
core   +1 more source

Cooperative differential space-time spreading for the asynchronous relay aided CDMA uplink using interference rejection spreading code [PDF]

open access: yes, 2010
—This letter proposes a differential Space–Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchroniza-tion is required at the cooperating nodes.
Chen, Sheng   +2 more
core   +1 more source

Cooperative diversity in the presence of impulsive noise [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2009
Although there already exists a rich literature on cooperative diversity, current results are mainly restricted to the conventional assumption of additive white Gaussian noise (AWGN). AWGN model realistically represents the thermal noise at the receiver, but ignores the impulsive nature of atmospheric noise, electromagnetic interference, or man-made ...
Suhail Al-Dharrab, Murat Uysal
openaire   +1 more source

Channel estimation method for multi-node amplify-and-forward co-operative communication over frequency-selective fading channels

open access: yesTongxin xuebao, 2008
A training sequence aided least squares channel estimation method was proposed for orthogonal frequency di-vision multiplexing (OFDM) based multi-node amplify-and-forward (AF) cooperative communication over fre-quency-selective fading channels.
YAN Kai   +3 more
doaj  

Relay Selection for Cooperative NOMA

open access: yes, 2016
This letter studies the impact of relay selection (RS) on the performance of cooperative non-orthogonal multiple access (NOMA). In particular, a two-stage RS strategy is proposed, and analytical results are developed to demonstrate that this two-stage ...
Dai, Huaiyu   +2 more
core   +1 more source

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