Compressed Relaying for Two-Way Relay Networks With Correlated Sources

Huo, Qiang; Yang, Kun; Song, Lingyang; Li, Yonghui; Jiao, Bingli

doi:10.1109/lwc.2014.2362748

Cited by 4 publications

(6 citation statements)

References 9 publications

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“…First, we compare the lower bound of the compression rate of the Huffman-compressed PNC scheme in [3] to that of the LXS scheme as a function of the correlation level characterized by p. The lossless compression rate in case of HPNC is bounded as C r,HPNC ≥ (1 + H b (p))/2 [3], while in LXS it is bounded as C r ≥ H b (p). Notably, since 0 ≤ H b (p) ≤ 1, LXS can provide significantly lower compression rates.…”

Section: Numerical Resultsmentioning

confidence: 99%

Exchange of Correlated Binary Sources in Two-Way Relay Networks Using LDPC Codes

Salim

Duman

2017

IEEE Wireless Commun. Lett.

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Abstract-We consider the problem of exchanging messages in two-way relay (TWR) systems when the sources are correlated binary sequences. In a TWR system, two users communicate simultaneously in both directions to exchange their messages with the help of a relay. Harnessing the fact that the users have access to their own non-compressed messages as side information, each user can compress its message according to the Slepian-Wolf coding strategy by using low-density parity-check codes, particularly, the syndrome approach. Through numerical examples, we show that the proposed scheme offers significant improvements in compression rates compared to the existing solutions in the literature.

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Section: Numerical Resultsmentioning

confidence: 99%

Exchange of Correlated Binary Sources in Two-Way Relay Networks Using LDPC Codes

Salim

Duman

2017

IEEE Wireless Commun. Lett.

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“…After some mathematical manipulations and by using the Q-function, Eq. (12) can be rewritten in a closedform expression as [27] P PNC (γ) = Q (γ th ) + 1 2 Q −γ th + 2 2γ − 1 2 Q γ th + 2 2γ…”

Section: Discussionmentioning

confidence: 99%

“…is the optimal decision threshold. After some mathematical manipulations and by using the Q-function, (12) can be rewritten in a closed-form expression as [27]…”

Section: Appendixmentioning

confidence: 99%

“…Moreover, as shown in a recent work [26], if sensor nodes can exchange correlated information over the wireless medium before transmitting the correlated data to the sink nodes, this can significantly increase the overall network transmission efficiency. In these scenarios, we can model the part of the network as a TWRN with correlated sources exchanging their information [27].…”

Section: Introductionmentioning

confidence: 99%

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Source and physical‐layer network coding for correlated two‐way relaying

Huo

Song

et al. 2016

IET Communications

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In this paper, we study a half-duplex two-way relay channel (TWRC) with correlated sources exchanging bidirectional information. In the case, when both sources have the knowledge of correlation statistics, a source compression with physical-layer network coding (SCPNC) scheme is proposed to perform the distributed compression at each source node. When only the relay has the knowledge of correlation statistics, we propose a relay compression with physical-layer network coding (RCPNC) scheme to compress the bidirectional messages at the relay. The closed-form block error rate (BLER) expressions of both schemes are derived and verified through simulations. It is shown that the proposed schemes achieve considerable improvements in both error performance and throughput compared with the conventional non-compression scheme in correlated two-way relay networks (CTWRNs).

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“…The TWRN system consists of two end nodes, A and B, that exchange their information via a relay node, R, simultaneously. PLNC can potentially elevate the throughput of a traditional TWRN by 100 % [2], [3]. To relay information, PLNC can utilize various strategies at the relay, such as amplify-and-forward (AF) and denoise-andforward (DNF) [4].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of PLNC using hierarchical modulation

Awny

Tsimenidis

Chambers

et al. 2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-In this paper, we propose and analyze the performance of a two-way relay network (TWRN) using physical layer network coding (PLNC) with hierarchical modulation (HM). The performance is evaluated for additive white Gaussian noise (AWGN) channels. The TWRN consists of two end nodes and a relay, where each node has a single antenna and operates in a half-duplex mode. Using an analytical approach, we derive the end-to-end symbol error rate (SER) performance expression of the 4/16-QAM HM for the high priority (HP) and the low priority (LP) streams, respectively, as a function of signal-to-noise ratio (SNR). It has been found the analytical and simulation results are in close agreement. The utilization of the proposed HM-PLNC system minimizes the computational complexity of the denoise and forward (DNF) operations at the relay by reducing the number of Euclidean distance computations required to 18 compared to the 49 required in an equivalent 16-QAM based PLNC system. Index Terms-Hierarchical modulation (HM), physical layer network coding (PLNC), denoise and forward (DNF), two-way relay network (TWRN), half-duplex (HD)

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Compressed Relaying for Two-Way Relay Networks With Correlated Sources

Cited by 4 publications

References 9 publications

Exchange of Correlated Binary Sources in Two-Way Relay Networks Using LDPC Codes

Exchange of Correlated Binary Sources in Two-Way Relay Networks Using LDPC Codes

Source and physical‐layer network coding for correlated two‐way relaying

Performance analysis of PLNC using hierarchical modulation

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