Outage optimality of opportunistic amplify-and-forward relaying

Bletsas, Aggelos; Shin, Hyundong; Win, Moe Z.

doi:10.1109/lcomm.2007.061589

Cited by 156 publications

(62 citation statements)

References 6 publications

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“…This is a typical assumption used in many references, such as in [13,18,23,24], considering cooperative relays. In this case, the total power P = 1 is only consumed by the first (S-R) and second (R-D) hops.…”

Section: Icrpmentioning

confidence: 99%

“…In addition to BER/SER, the outage probability of cooperative wireless systems has been investigated, for example, in [16][17][18][19]. In more detail, the lower and asymptotic bounds of outage probability have been derived in [16] for dual-hop relay networks experiencing Rayleigh fading.…”

Section: Introductionmentioning

confidence: 99%

“…In the published references, such as [13,18,23,24], on the relay communications employing cooperative relays, a typical assumption used is ideal cooperation among relays. Under this assumption, there is no energy consumption for the information exchange required by cooperation and, furthermore, other overheads required are also often ignored.…”

Section: Introductionmentioning

confidence: 99%

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Performance comparison of cooperative relay links with different relay processing strategies: Nakagami/Gamma approximation approaches

Shi

Dong

Yang

2014

J Wireless Com Network

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In this article, we investigate and compare the error performance of two-hop communication links (THCLs) with multiple relays, when distributed and cooperative relay processing schemes are respectively employed. Our main objectives include finding some general and relatively simple ways for estimating error performance and demonstrating the trade-off of using cooperative relay processing. One distributed relay processing and two cooperative relay processing schemes are compared. In the two cooperative relay processing schemes, one assumes the ideal relay cooperation, in which relays exchange information without consuming energy, while the other one assumes energy consumption for relay cooperation. In this paper, the error performance of the THCLs employing the considered relay processing schemes is investigated, when the channels from source to relays, the channels for information exchange and that from relays to destination experience various types of fading modeled by the Nakagami-m distributions. In order to derive the formulas for the bit error rate (BER) of the THCLs employing binary phase-shift keying (BPSK) modulation and various relay processing schemes, we introduce the Nakagami and Gamma approximation for finding the distribution functions of various variables encountered. Our studies show that the proposed approximation approaches are highly effective, which are capable of accurately predicting the BER of the THCLs supported by the different relay processing schemes.

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Section: Icrpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance comparison of cooperative relay links with different relay processing strategies: Nakagami/Gamma approximation approaches

Shi

Dong

Yang

2014

J Wireless Com Network

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“…The authors in [5] showed that this scheme has the same diversity order as the cooperative diversity using space-time-coding [6] in terms of the outage probability for both decode-and-forward and amplify-and-forward schemes. However, this important result was given using semi-analytical asymptotic analysis at high SNR only (without deriving a closed-form expression for the outage probability).Many different schemes for single relay selection have been proposed in [5], [7]- [9]. The authors in [10] analyzed the adaptive DAF relaying technique where among N relays that can participate, only k relays (k <N ), with good channels to the source decode and forward (retransmit) the source information to the destination.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Adaptive LDPC Coded Modulation Cooperative Wireless Communication System With Best-Relay Selection

Mohamed¹,

Abd-Elnaby²

2014

IJDIWC

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In this paper the performance of a cooperative wireless communication system based on combined best relay selection (BRS) and adaptive LDPC coded modulation (ACM) scheme is investigated. These investigations are focused on evaluating the performance of the proposed cooperative wireless communication system over independent non-identical Rayleigh fading channels in terms of bit-error rate (BER) using MATLAB® computer simulations and comparing the system performance with ACM direct transmission and ACM cooperative with single relay. The simulations results show that the proposed cooperative scheme achieves lower signal-to-noise ratio (SNR) values for desired bit-error rate (BER) and high spectral efficiency as compared to ACM direct transmission and ACM cooperative with single relay.

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“…Semakin rendah outage probability yang didapatkan, maka throughput dan efisiensi spektral juga akan semakin meningkat [11]. Penggunaan mode full-duplex untuk memperoleh efisiensi spektral yang tinggi telah dikaji pada penelitian sebelumnya [12].…”

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Perbandingan Kinerja Non-Orthogonal dan Orthogonal Amplify and Forward pada Two-Way Cooperative WLAN

Rizki¹,

Nasaruddin²,

Adriman³

2017

Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI)

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Abstract-Nowadays, the advancement of Wireless Local Area Network (WLAN) technology has developed very rapidly because it is very practical and has effective mobility level. In practice, there is a major problem in wireless communications systems, which is fading. Fading can cause information signal power decreasing. Fading can be overcome using a cooperative communication system, which is a method that utilizes antenna from other users (relays), using principle of diversity, hence the performance of wireless communication system is improved. A relay has several protocols on cooperative communication system, such as Amplify and Forward (AF), Decode and Forward (DF), and Compress and Forward (CF). The AF protocol is divided into two types: Non-Orthogonal Amplify and Forward (NAF) and Orthogonal Amplify and Forward (OAF). In this paper, the performance comparison of two-way NAF and OAF in terms of outage probability, throughput, and spectral efficiency is investigated. The method used is computer simulation with system modeling and performance analysis. The simulation results show that OAF protocol can minimize outage probability and increase throughput and spectral efficiency, compared to NAF protocol on two-way WLAN cooperative network. Sistem komunikasi kooperatif adalah salah satu solusi untuk mengatasi masalah fading, yaitu dengan memanfaatkan antena dari pengguna lain dengan prinsip teknik diversitas untuk mendapatkan suatu antena virtual (relay), sehingga dapat meningkatkan kinerja pada sistem komunikasi WLAN [5]. Relay berfungsi untuk membantu meneruskan sinyal informasi yang dikirimkan secara broadcast dari sumber ke tujuan [6]. Dengan demikian, mekanisme relay pada sistem komunikasi kooperatif mempunyai peran penting dalam meningkatkan kinerja sistem komunikasi WLAN. Ada beberapa protokol relay pada sistem komunikasi kooperatif yaitu amplify and forward (AF), decode and forward (DF), dan compress and forward (CF) [7]. Pada metode AF, relay menguatkan sinyal informasi yang diterima dari sumber dan kemudian diteruskan ke tujuan [8]. Metode ini lebih praktis karena sangat sederhana dan mudah untuk diimplementasikan, memiliki kompleksitas komputasi dan delay yang rendah [9]. Metode AF dapat diklasifikasi dalam dua metode yaitu NonOrthogonal Amplify and Forward (NAF) dan Orthogonal Amplify and Forward (OAF) [10]. Intisari-Untuk mengevaluasi kinerja jaringan sistem komunikasi kooperatif, dilakukan pengukuran tingkat outage probability yang didapatkan pada saat sinyal informasi ditransmisikan ke tujuan. Semakin rendah outage probability yang didapatkan, maka throughput dan efisiensi spektral juga akan semakin meningkat [11]. Penggunaan mode full-duplex untuk memperoleh efisiensi spektral yang tinggi telah dikaji pada Kurnia Rizki: Perbandingan Kinerja Non-Orthogonal dan ...

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Outage optimality of opportunistic amplify-and-forward relaying

Cited by 156 publications

References 6 publications

Performance comparison of cooperative relay links with different relay processing strategies: Nakagami/Gamma approximation approaches

Performance comparison of cooperative relay links with different relay processing strategies: Nakagami/Gamma approximation approaches

Performance Evaluation of Adaptive LDPC Coded Modulation Cooperative Wireless Communication System With Best-Relay Selection

Perbandingan Kinerja Non-Orthogonal dan Orthogonal Amplify and Forward pada Two-Way Cooperative WLAN

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