A new relay assisted Hybrid ARQ scheme

Yang, Hongwen; Dai, Liyun

doi:10.1109/wcsp.2010.5633558

Cited by 2 publications

(5 citation statements)

References 15 publications

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“…This gain can be explained by the fact the source transmits new message while the relay still retransmits previous one and the interference is well managed through a capacity-achieving codes. Notice that the gain is much higher than those seen in [17], [18], certainly due to the considered decoder. As a consequence, the protocol is powerful and so of great interest.…”

Section: Numerical Resultsmentioning

confidence: 74%

“…In [15], [16], a superimposed modulation (linear combination of symbols) is proposed in multi-user context where a node transmits simultaneously its own data packet and the packet of another transmitter for which it acts as a relay. In [17], [18], a new protocol in single-user context combining HARQ and DF relay is introduced. The idea is to let the source send a new message while the relay is retransmitting previous one.…”

Section: Introductionmentioning

confidence: 99%

“…In addition only a Minimum Mean Square Error (MMSE) receiver is carried out for handling the interference between both simultaneous received messages at the destination. More precisely, in [17], the authors considered an dynamic protocol where the source sends a new message rather than a space-time coded version of the previous message as soon as the received Signal-Interference-to-Noise Ratio (SINR) is higher than a pre-defined threshold. This implies i) that the source only seldom uses the ability to send a new message, and ii) that the source has the channel state information of the future channels.…”

Section: Introductionmentioning

confidence: 99%

“…The main contribution of this paper is to analyze the real impact of the protocol of [17], [18] (the source sends a new message while the relay retransmits another one) in a more realistic setting: IR-HARQ, no channel state information at the transmitter, and better decoders. Indeed, we will show the gain in throughput of this protocol when the receiver is either optimally designed through information-theoretic tools (e.g., Multiple Access Channel -MAC-capacity region) or suboptimally chosen but using at least the Successive Interference Canceler (SIC) principle.…”

Section: Introductionmentioning

confidence: 99%

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Throughput-efficient Relay assisted Hybrid ARQ

Khreis

Ciblat

Bassi

et al. 2018

2018 15th International Symposium on Wireless Communication Systems (ISWCS)

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Reliable data transmission within wireless communication systems can be obtained via various means, including (i) Hybrid Automatic Repeat reQuest (HARQ) mechanisms which allow retransmission of not-correctly decoded packets; (ii) Additional nodes, called relays, which may also help the transmission by retransmitting these packets. An efficient combination of both techniques is therefore of great interest. This paper proposes a new relay assisted HARQ protocol aiming at maximizing the system throughput. The main idea is to allow the source to transmit a new message during the same time slot as the relay is retransmitting some previous message. By using efficient interference canceler at the destination, the numerical results show significant throughput gain compared to standard approaches working separately on each message.

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Section: Numerical Resultsmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Throughput-efficient Relay assisted Hybrid ARQ

Khreis

Ciblat

Bassi

et al. 2018

2018 15th International Symposium on Wireless Communication Systems (ISWCS)

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show abstract

“…HARQ (Hybrid Automatic Repeat Request) [1][2][3][4][5][6][7] technique is one of the important techniques to realize reliable transmission of high data rate in the wireless network. At present there are mainly three kinds of HARQ.…”

Section: Introductionmentioning

confidence: 99%

A novel HARQ Scheme based on Frequency Diversity and Energy-MRC

Zhang¹,

Zeng²

2013

JNW

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In order to reduce the influence of multipath propagation on signal transmission in the OFDM wireless network, a novel HARQ scheme based on frequency diversity and Energy-MRC is proposed. This scheme takes the times of accurate transmission of previous data as reference value of present data transmission. When the data is retransmitted, the position in which information sequence lives after constellation mapping is changed before IFFT. So each time subcarrier fading relativity of the same information sequence is small, and major frequency diversity gain is obtained. In the receiving terminal, energy of the same information sequence in many times of transmission is maximal ratio combined after FFT. Under Rayleigh fading channel environment, simulation experiment shows that this scheme can reduce effectively BER(Bit Error Rate), compared with HARQ scheme without frequency diversity and MRC based on channel impulse response power. This scheme is easy to realize, and complex channel estimation is avoided.

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A new relay assisted Hybrid ARQ scheme

Cited by 2 publications

References 15 publications

Throughput-efficient Relay assisted Hybrid ARQ

Throughput-efficient Relay assisted Hybrid ARQ

A novel HARQ Scheme based on Frequency Diversity and Energy-MRC

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