An Incremental Relaying Approach for Superposition Modulated Cooperative Transmission

Hasan, Cengis; Aygölü, Ümit

doi:10.1109/wcnc.2009.4917586

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…For the diversity combining case, the empirical (blue) curves are obtained by generating the channel gains randomly and numerically computing the probabilities in (4) and (7) (using Monte Carlo evaluation). For the "analyticalexact" (red) curves, we have used the expressions in (5) and (8) to compute the packet error probability by substituting the values of P A , P B , λ AD , λ BD , λ AB and R. The "analyticalapprox" (black) curves are high-SNR approximations obtained by neglecting the O terms in (6) and (9) respectively. For the code combining case, the empirical curves are obtained by Monte Carlo evaluation of the probabilities using (10) and (12), and the analytical approximations are the high-SNR asymptotes in (11) and (13).…”

Section: Simulation Resultsmentioning

confidence: 99%

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Superposition Modulation-Based Symmetric Relaying With Hybrid ARQ: Analysis and Optimization

Chaitanya

Larsson

2011

IEEE Trans. Veh. Technol.

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Abstract-We present a retransmission scheme based on superposition modulation for the symmetric relaying scenario when the number of retransmissions for a data packet is limited. We consider both diversity combining based as well as code combining based retransmission schemes. Under the assumption that the receiver implements a mechanism that can use all accumulated received mutual information when decoding the message, we derive the packet error probability (PEP) expressions for the proposed retransmission scheme for the case when only one retransmission is allowed. Based on the PEP expressions derived, we provide a closed-form solution for the optimal superposition ratio (the fraction of power used for the relaying operation). Simulation results show that the proposed retransmission scheme offers significant gains compared to a retransmission scheme based on classical decode-and-forward (DF) relaying.

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Section: Simulation Resultsmentioning

confidence: 99%

“…For an N -user cooperative multiple access system, cooperation using superposition modulation has been shown to achieve the optimal diversity-multiplexing gain [7]. In [8], the authors extended the idea to the case of incremental relaying, when feedback is available from the destination.…”

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confidence: 99%

Superposition Modulation-Based Symmetric Relaying With Hybrid ARQ: Analysis and Optimization

Chaitanya

Larsson

2011

IEEE Trans. Veh. Technol.

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“…Ayrıca, her iki iletimin çeşitleme düzeyleri incelenmiştir [4]. Herhangi X dügümünden Y dügümüne yapılan iletimin durugumsu Rayleigh sönümlemeli kanalda servis-dışı kalma olasılıgı [1], R spektral verimliligi göstermeküzere,…”

Section: Servis-dışı Kalma Olasılıgı Analiziunclassified

Incremental superposition modulated cooperative transmission

Hasan¹,

Aygölü²

2009

2009 IEEE 17th Signal Processing and Communications Applications Conference

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OzetçeBu çalışmada toplamsal modülasyonlu (TM) işbirlikli iletim ile artımlı aktarım (incremental relaying) teknigini kullanan yeni bir işbirlikli iletim yöntemiönerilmiştir. Artımlı aktarım bir karma otomatik yineleme isteme (ARQ) türü geribesleme kanalıyla saglanmakta, TM çöz-ve-aktar iletimi geribesleme verisi ile denetlenmektedir.Önerilen sistemin servis-dışı kalma olasılıgı hesaplanmış ve düşük işaret-gürültü oranlarında TM çöz-ve-aktar iletime çeşitleme düzeyi bakımındanüstünlügü ortaya konmuştur. Abstract A novel cooperative transmission scheme utilizing superposition modulation and incremental relaying together is proposed. Incremental relaying is provided by a hybrid automatic repeat request (H-ARQ) type feedback channel. Decode-and-forward method with superposition modulation is performed under thecontrol of feedback data. The outage probability analysis is effectuated, and it is shown that the new scheme outperforms the classical superposition modulated decode-and-forward scheme in terms of achieved diversity level at low signal-to-noise ratios (SNRs).

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“…The outage probability of a cooperative wireless network invoking H-ARQ and coded cooperation amongst the nodes was derived in [141]. Furthermore, Hasan and Aygolu [142] presented a cooperative H-ARQ transmission scheme based on superposition modulation and incremental relaying, while Stanojev et al [143] investigated the energy efficiency of H-ARQ protocols in a single-user link as well as with the assistance of relay stations. Cross-layer operation assisted superposition coding aided multiplexed H-ARQ techniques were studied by Zhang and Hanzo [144].…”

Section: Introductionmentioning

confidence: 99%

“…Hasan and Aygolu [142] Presented a cooperative transmission scheme based on superposition modulation and incremental relaying, which is provided by a H-ARQ type feedback channel.…”

Section: Introductionmentioning

confidence: 99%