More tractable average error rate expression for the <i>N</i>th best relay selection scheme of DF relaying over Rayleigh fading channels

Ko, Kyunbyoung; Woo, Choongchae

doi:10.1002/dac.1397

Cited by 12 publications

(18 citation statements)

References 10 publications

(34 reference statements)

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“…Except for the opportunistic relaying schemes, [17][18][19] AF, ADF, and HDAF schemes with L relays, which are considered in this paper, have the same processing delay. It means that all of them require (L+1) time slots for data transmission when each time slot consists of N D modulated symbols.…”

Section: Complexity Comparisonmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] The 2 main schemes are the amplify-andforward (AF) scheme and the decode-and-forward (DF) scheme. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] The 2 main schemes are the amplify-andforward (AF) scheme and the decode-and-forward (DF) scheme.…”

Section: Introductionmentioning

confidence: 99%

“…3,4 When each relay node forwards only correctly decoded data symbols to the destination node, it can be defined as an adaptive decode-and-forward (ADF) scheme. For us to mitigate the spectral efficiency reduction, opportunistic relaying schemes based on the relay selection have been studied, [17][18][19] where only 2 time slots are required. [8][9][10] Jang and Ko 7 analyzed the bit error performance for ADF and fixed-DF relaying environments.…”

Section: Introductionmentioning

confidence: 99%

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Performance comparison of dual‐hop hybrid decode‐or‐amplify‐forward relay schemes for M‐ary quadrature amplitude modulation burst transmission over Rayleigh fading channels

Woo

Lim

2017

Int J Communication

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This paper shows the analytical performance expressions of M-ary quadrature amplitude modulation burst symbol transmission for hybrid decode-or-amplify-forward (HDAF) relay schemes over quasi-static Rayleigh-fading channels. First, we derive the probability density function of the received instantaneous signal-to-noise ratio as the simplified form, which is related to all the possible occurrence probabilities of error-events for M-ary quadrature amplitude modulation burst transmission. On the basis of the derived probability density function, we express average bit error probability, average symbol error probability, and average burst error rate as closed forms, which can be also applied to both amplify-and-forward and adaptive decode-and-forward (ADF) schemes. The analysis and simulation results show that HDAF scheme for burst transmission can achieve the performance of ADF scheme with symbol-by-symbol transmission, which is the achievable lower bound. Furthermore, the outage probability, the normalized channel capacity, and the goodput performance are also derived as closed forms. The analysis shows the superiority of HDAF scheme to ADF scheme. Comparison with simulations confirms that the derived analytical expressions are accurate over all signal-to-noise ratio regions and for different numbers of relays and modulation orders.

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Section: Complexity Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance comparison of dual‐hop hybrid decode‐or‐amplify‐forward relay schemes for M‐ary quadrature amplitude modulation burst transmission over Rayleigh fading channels

Woo

Lim

2017

Int J Communication

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“…By taking into account for all the possible error-events, the outage probability is presented as [5], [22] 2…”

Section: Combined Received Snr and Average Outage Probabilitymentioning

confidence: 99%

Approximated Outage Probability for ADF Relay Systems with Burst MPSK and MQAM Symbol Transmission

Ko¹,

Lim²

2015

International Journal of Contents

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In this paper, we derive the outage probability for M-ary phase shifting keying (MPSK) (PDF) is derived on the basis of error events at relay nodes corresponding to channel estimation errors. Next, the average outage probability is derived as an approximate expression for an arbitrary link signal-to-noise ratio (SNR) for different modulation orders. Its accuracy is demonstrated by comparison with simulation results. Further, it is confirmed that BT-ADF relay systems with pilot symbol based channel estimation schemes enables to select correctly decoded relay nodes without additional signaling between relay nodes and the destination node, and it is verified that the ideal performance is achieved with small SNR loss.

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“…Considering (20) and (21), the numerator of (18) will be minimized when equality condition holds for (21), and hence, the result can be expressed as…”

Section: Lemmamentioning

confidence: 99%

Optimal power‐aware relay placement for cooperative wireless sensor networks

Abdizadeh

Jamali-Rad

Abolhassani

2013

Int J Communication

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SUMMARY We study the problem of optimizing the symbol error probability (SEP) performance of cluster‐based cooperative wireless sensor networks. Recent studies in literature show that an efficient relay selection protocol based on simple geographical information of the nodes to execute cooperative diversity can significantly improve the SEP performance at the destination of such networks. As well, similar line of research on optimal power allocation (for the source and relay nodes) can be found in literature. However, to achieve the best SEP performance at the destination of a cooperative wireless sensor network, joint optimization of power allocation and relay placement should be accomplished. To this aim, we reformulate the SEP of a multi‐hop cooperative communication in a general form and optimize transmitted power level and relay placement simultaneously. This analysis is developed for both amplify‐and‐forward and decode‐and‐forward relaying protocols. Simulation results demonstrate that the proposed joint optimization can effectively improve the SEP performance of the network. Copyright © 2013 John Wiley & Sons, Ltd.

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More tractable average error rate expression for the Nth best relay selection scheme of DF relaying over Rayleigh fading channels

Cited by 12 publications

References 10 publications

Performance comparison of dual‐hop hybrid decode‐or‐amplify‐forward relay schemes for M‐ary quadrature amplitude modulation burst transmission over Rayleigh fading channels

Performance comparison of dual‐hop hybrid decode‐or‐amplify‐forward relay schemes for M‐ary quadrature amplitude modulation burst transmission over Rayleigh fading channels

Approximated Outage Probability for ADF Relay Systems with Burst MPSK and MQAM Symbol Transmission

Optimal power‐aware relay placement for cooperative wireless sensor networks

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