Efficient relay selection scheme utilizing superposition modulation in cooperative communication

Yu, Shukun; Ahn, Yeong-Seop; Choi, Sung-Bok; Moon, Yeon-Kug; Song, Hyoung-Kyu

doi:10.1007/s12243-019-00726-6

Cited by 4 publications

(6 citation statements)

References 10 publications

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“…The end-to-end SER of the cooperative communication fading link can be obtained by substituting (8) (12) and (18) into (19).…”

Section: S D R D E P →→mentioning

confidence: 99%

“…Relay-assisted cooperation is the first step towards the 5G system that is expected to deliver up to 20Gbps in downlink (D/L) and 10Gbps in uplink (U/L) will be benchmarked by network operators during initial rollouts in the next few years [11][12]. The relay infrastructure does not need wired network connection, thus offering a reduction in the backhaul costs of the operator.…”

Section: Introductionmentioning

confidence: 99%

“…Cooperative communication is the natural choice for 5G wireless communication system, and it is adopted in 3 rd generation partnership project (3GPP), universal mobile telecommunications service (UMTS), long term evolution (LTE)-Advanced and IEEE 802.11 because the nodes in the cooperative communication network can share their resources with each other during the signal transmission [4][5][6]. Also, it is incorporated into numerous 5G wireless applications, such as machine-to-machine (M2M), device-to-device (D2D), cognitive radio (CR), high speed terrestrial network (HSTN) & free space optical (FSO) communication [7][8][9][10].Relay-assisted cooperation is the first step towards the 5G system that is expected to deliver up to 20Gbps in downlink (D/L) and 10Gbps in uplink (U/L) will be benchmarked by network operators during initial rollouts in the next few years [11][12]. The relay infrastructure does not need wired network connection, thus offering a reduction in the backhaul costs of the operator.…”

mentioning

confidence: 99%

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Analysis of Selective-Decode and Forward Relaying Protocol over k-µ Fading Channel Distribution

Shankar¹,

Bhardwaj²,

Mishra³

2020

JTIT

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In this work, we examine the performance of selective-decode and forward (S-DF) relay systems over κ-µ fading channel condition. We discuss about the probability density function (PDF), system model, and cumulative distribution function (CDF) of κ-µ distributed envelope and signal to noise ratio (SNR) and the techniques to generate samples that follow κ-µ distribution. Specifically, we consider the case where the source-torelay (S→R), relay-to-destination (R→D) and source-to-destination (S→D) link is subject to the independent and identically distributed (i.i.d.) κ-µ fading. From the simulation results, the enhancement in the symbol error rate (SER) with a stronger line of sight (LOS) component is observed. This shows that S-DF relaying systems can perform well even in the non-fading or LOS conditions. Monte Carlo simulations are conducted for various values of fading parameters and the outcomes closely match with theoretical outcomes which validate the derivations.Keywords: multiple input multiple output, selective decode and forward, symbol error rate, channel fading, relaying protocol, signal to noise ratio, channel state information. IntroductionThe 5 th generation (5G) wireless communication systems will require a major paradigm shift to meet the increasing demand for reliable connectivity through high data rates, low latency, better energy efficiency, and Femto cell-based relays [1][2][3]. These relay nodes are equipped with energy harvesting (EH) techniques in the relaying network to improve energy efficiency. Cooperative communication is the natural choice for 5G wireless communication system, and it is adopted in 3 rd generation partnership project (3GPP), universal mobile telecommunications service (UMTS), long term evolution (LTE)-Advanced and IEEE 802.11 because the nodes in the cooperative communication network can share their resources with each other during the signal transmission [4][5][6]. Also, it is incorporated into numerous 5G wireless applications, such as machine-to-machine (M2M), device-to-device (D2D), cognitive radio (CR), high speed terrestrial network (HSTN) & free space optical (FSO) communication [7][8][9][10].Relay-assisted cooperation is the first step towards the 5G system that is expected to deliver up to 20Gbps in downlink (D/L) and 10Gbps in uplink (U/L) will be benchmarked by network operators during initial rollouts in the next few years [11][12]. The relay infrastructure does not need wired network connection, thus offering a reduction in the backhaul costs of the operator. Through the additional cooperative diversity inherent in such wireless systems, cooperative wireless communication significantly improves end-to-end reliability. If the direct source-to-destination (SD) channel is in a deep fade, the main advantage of the cooperative communication is that the destination node can still receive the source signal via the relay node.According to the signal receiving and transmitting, there are two basic methods of relaying: analog & digital. Analog relaying is also called no...

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“…The end-to-end SER of the cooperative communication fading link can be obtained by substituting (8) (12) and (18) into (19).…”

Section: S D R D E P →→mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Selective-Decode and Forward Relaying Protocol over k-µ Fading Channel Distribution

Shankar¹,

Bhardwaj²,

Mishra³

2020

JTIT

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“…This scheme determines the threshold in order to select the relay. The threshold depends on how to define the threshold value [3]. There are many methods for these thresholds.…”

Section: Threshold-based Relay Selection Schemementioning

confidence: 99%

“…Best harmonic mean (BHM) is a well-known basic relay selection scheme [1]. In addition, Yu used a superposition modulation in cooperative communication and Wu used a power allocation for relay selection [2,3]. Furthermore, Kim used a novel dirty paper coding (DPC) and singular value decomposition (SVD) in multi-hop transmission of multi-user MIMO (MU-MIMO) system [4].…”

Section: Introductionmentioning

confidence: 99%

A Novel Relay Selection Scheme Based on Q-Learning in Multi-Hop Wireless Networks

Paek

Lee

et al. 2020

Applied Sciences

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In wireless communication systems, reliability, low latency and power are essential in large scale multi-hop environment. Multi-hop based cooperative communication is an efficient way to achieve goals of wireless networks. This paper proposes a relay selection scheme for reliable transmission by selecting an optimal relay. The proposed scheme uses a signal-to-noise ratio (SNR) based Q-learning relay selection scheme to select an optimal relay in multi-hop transmission. Q-learning consists of an agent, environment, state, action and reward. When the learning is converged, the agent learns the optimal policy which is a rule of the actions that maximize the reward. In other words, the base station (BS) knows the optimal relay to select and transmit the signal. At this time, the cooperative communication scheme used in this paper is a decode-and-forward (DF) scheme in orthogonal frequency division multiplexing (OFDM) system. The Q-learning in the proposed scheme defines an environment to maximize a reward which is defined as SNR. After the learning process, the proposed scheme finds an optimal policy. Furthermore, this paper defines a reward which is based on the SNR. The simulation results show that the proposed scheme has the same bit error rate (BER) performance as the conventional relay selection scheme. However, this paper proposes an advantage of selecting fewer relays than conventional scheme when the target BER is satisfied. This can reduce the latency and the waste of resources. Therefore, the performance of the multi-hop transmission in wireless networks is enhanced.

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Joint rate and relaying nodes allocation for orthogonal MAMRN

Khansa

Visoz

Hayel

et al. 2022

2022 5th International Conference on Advanced Communication Technologies and Networking (CommNet)

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Efficient relay selection scheme utilizing superposition modulation in cooperative communication

Cited by 4 publications

References 10 publications

Analysis of Selective-Decode and Forward Relaying Protocol over k-µ Fading Channel Distribution

Analysis of Selective-Decode and Forward Relaying Protocol over k-µ Fading Channel Distribution

A Novel Relay Selection Scheme Based on Q-Learning in Multi-Hop Wireless Networks

Joint rate and relaying nodes allocation for orthogonal MAMRN

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