Analysis of BER and capacity for dual-hop OFDM relay system with subcarrier mapping in Nakagami-m fading

Shah, Raza Ali; Rajatheva, Nandana; Ji, Yusheng

doi:10.1109/icc.2014.6884128

Cited by 9 publications

(9 citation statements)

References 12 publications

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“…The CFRs of subcarriers for both hops are assumed to be independent and identically distributed random variables. This assumption gives exact results for a full-diversity OFDM system, i.e, when L = N and provides approximate analysis for large L, i.e., when L ≥ 6 for the dual-hop OFDM relay system with SCM [16]. The CDF and PDF of SNR for kth subcarrier of hop-j can be expressed as…”

Section: System Modelmentioning

confidence: 99%

“…Subcarrier mapping (SCM), which is considered to be a capacity-maximization scheme for a dual-hop OFDM relay system, is studied extensively in the literature [6][7][8][9][10][11][12][13][14][15][16]. Two types of ordered SCM schemes, i.e., worst-to-best (WTB) and best-to-best (BTB) are commonly considered.…”

Section: Introductionmentioning

confidence: 99%

“…Although [14,15] share valuable recent contributions, yet these consider a DF relaying system while this paper focuses on AF relaying. In [16], BER and capacity analysis of an OFDM fixed gain AF relay system with SCM is presented for Nakagami-m fading.…”

Section: Introductionmentioning

confidence: 99%

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Outage analysis of a dual-hop OFDM amplify-and-forward relay system with subcarrier mapping in Rayleigh fading

Shah

Rajatheva

2014

J Wireless Com Network

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Subcarrier mapping (SCM) is considered to be crucial for capacity-maximization in an orthogonal frequency division multiplexing (OFDM) relaying network. Although SCM in an OFDM system has been investigated extensively, nevertheless, the outage probability and outage capacity analysis of the system is not yet available in the literature. This paper presents the outage analysis of a dual-hop OFDM relay system with ordered subcarrier paring schemes, i.e., worst-to-best (WTB) SCM and best-to-best (BTB) SCM. Accurate close-form expressions are derived for end-to-end outage while considering a dual-hop fixed gain amplify-and-forward (AF) relaying system with Rayleigh fading channel model. The first and second moments of end-to-end signal-to-noise ratio (SNR) and capacity are derived for WTB SCM and BTB SCM schemes while approximating the probability distribution function (PDF) of total capacity of each subcarrier pair by Gaussian distribution. The outage performances of these schemes are compared with balanced links, i.e., when the SNR is same for both hops, as well as unbalanced links, i.e., when the SNR of the second hop is one half of the SNR of the first hop. The numerical results validate the analysis in Rayleigh fading channel.

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Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Outage analysis of a dual-hop OFDM amplify-and-forward relay system with subcarrier mapping in Rayleigh fading

Shah

Rajatheva

2014

J Wireless Com Network

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“…It transformed subcarrier pairing into a linear assignment problem and apply Jonker-Volgenant (JV) algorithm to deal with it. Also there are some performance analysis literatures about the OFDM AF relaying system with SCM, nevertheless, most assume in ideal channel, just like [7]- [10]. Surely ideal channel didn't exist in reality, but the research methods can be referenced in studying imperfect systems.…”

Section: Introductionmentioning

confidence: 99%

“…Reference [9] analytically examined BER performance of DPSK OFDM AF with Fixed Gain (FG) relay systems with both BTB and BTW SCM. Reference [10] presented the analysis of BER and ergodic capacity for dual-hop OFDM AF relay system with SCM in Nakagami-m fading channel. Reference [11] introduced outage probability expressions for OFDM AF system with SCM under ideal condition.…”

Section: Introductionmentioning

confidence: 99%

Performance of OFDM AF Relaying System with Subcarrier Mapping in the Presence of Phase Noise

Zhang¹,

Huang²,

Li³

et al. 2016

jcm

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Abstract-In this article we investigate the performance of Orthogonal Frequency Division Multiplexing (OFDM)-based dual-hop Amplify-and-Forward (AF) relay networks in the presence of Phase Noise (PN). A scenario with Rayleigh fading statistics on both hops is assumed. We prove the intercarrier interference is Gaussian random variable firstly, which is recognized by everyone but has not been proved, and obtain the form of Signal-to-Noise Ratios (SNR). Then we investigate the end-to-end SNR Cumulative Distribution Function (CDF) and probability density functions (PDF) with ordered subcarrier mapping schemes, i.e., Best-to-Worst (BTW) subcarrier mapping (SCM) and Best-to-Best (BTB) SCM, and get the accurate Closed-Form expressions for CDF and PDF of the OFDM AF system with PN in Rayleigh fading channel. Using the expressions above, we get outage probability. Closed-form asymptotic expressions of outage probability are then derived. With the help of end-to-end SNR PDF we have the Bit Error Rate (BER), closed-form asymptotic expressions of BER show that the BER of system in the presence of PN can not exceed a fixed level even when SNR is in high regime. Finally, we simulate the results and verify their accuracy. Conclusion analysis will provide a useful help in future application of the system.

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A Novel Solution for OFDM Based Relay Systems

Kočan

Pejanović-Djurišić

2015

Wireless Pers Commun

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Analysis of BER and capacity for dual-hop OFDM relay system with subcarrier mapping in Nakagami-m fading

Cited by 9 publications

References 12 publications

Outage analysis of a dual-hop OFDM amplify-and-forward relay system with subcarrier mapping in Rayleigh fading

Outage analysis of a dual-hop OFDM amplify-and-forward relay system with subcarrier mapping in Rayleigh fading

Performance of OFDM AF Relaying System with Subcarrier Mapping in the Presence of Phase Noise

A Novel Solution for OFDM Based Relay Systems

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