Design of Cross-Packet Channel Coding with Low-Density Parity-Check Codes

Chui, Jimmy; Chindapol, A.

doi:10.1109/itwitwn.2007.4318036

Cited by 8 publications

(11 citation statements)

References 7 publications

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“…In this article we use two different formulations proposed in literature which have the same performance: 1) H 12 is a random matrix while H 22 is an all-zero matrix. This code has been proposed and simulated in [4] …”

Section: Simulation Resultsmentioning

confidence: 99%

“…Besides for point-to-point communication, the concept of rootchecks was also applied for relay channels [6], [7]. We show that our proposed LDPC code performs close to the information theoretical limit and outperforms the previous approaches in [3], [4] whose structures do not guarantee full-diversity.…”

Section: Introductionmentioning

confidence: 93%

“…H-ARQ systems with CPC were designed based on turbo codes [3] and on LDPC codes [4], but these code designs do not guarantee full-diversity, especially if the coding rate approaches the maximum coding rate yielding full-diversity.…”

Section: Introductionmentioning

confidence: 99%

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Design of diversity-achieving LDPC codes for H-ARQ with cross-packet channel coding

Duyck

Capirone

Hausl

et al. 2010

21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

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Abstract-In wireless scenarios an effective protocol to increase the reliability for time-varying channels is the hybrid automatic repeat request (H-ARQ). The H-ARQ scheme with cross-packet channel coding (CPC) is a recently published extension of H-ARQ with several advantages. No full-diversity low-density paritycheck (LDPC) code design for the whole range of coding rates yielding full-diversity has been published. In this paper the authors provide a new outage behavior analysis and a new structured LDPC code ensemble achieving full-diversity for H-ARQ with CPC by exploiting the rootcheck principle. Simulation results show that the new code design outperforms the previous approaches, providing full-diversity and good coding gain, also at high coding rates.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

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Design of diversity-achieving LDPC codes for H-ARQ with cross-packet channel coding

Duyck

Capirone

Hausl

et al. 2010

21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

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“…In coding theory, streaming codes, as those investigated in [16] and [17], are also known as crosspacket codes. Cross-packet codes based on Turbo codes and LDPC codes have previously been considered in the context of HARQ in [18] and [19], respectively. The EMS protocols proposed in this paper extend streaming codes to an HARQ-INR setting in which the amount of new information bits that are appended within a retransmission is adaptive, as it depends on the delayed CSIT in manner similar to BRQ.…”

Section: A Prior Workmentioning

confidence: 99%

Generalized HARQ Protocols with Delayed Channel State Information and Average Latency Constraints

Trillingsgaard

Popovski

2018

IEEE Trans. Inform. Theory

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Abstract-In many wireless systems, the signal-to-interferenceand-noise ratio that is applicable to a certain transmission, referred to as channel state information (CSI), can only be learned after the transmission has taken place and is thereby delayed (outdated). In such systems, hybrid automatic repeat request (HARQ) protocols are often used to achieve high throughput with low latency. This paper put forth the family of expandable message space (EMS) protocols that generalize the HARQ protocol and allow for rate adaptation based on delayed CSI at the transmitter (CSIT). Assuming a block-fading channel, the proposed EMS protocols are analyzed using dynamic programming. When full delayed CSIT is available and there is a constraint on the average decoding time, it is shown that the optimal zero outage EMS protocol has a particularly simple operational interpretation and that the throughput is identical to that of the backtrack retransmission request (BRQ) protocol. We also devise EMS protocols for the case in which CSIT is only available through a finite number of feedback messages. The numerical results demonstrate that the throughput of BRQ approaches the ergodic capacity quickly compared to HARQ, while EMS protocols with only three and four feedback messages achieve throughputs that are only slightly worse than that of BRQ.Index Terms-hybrid automatic repeat request, delayed channel state information, low latency, backtrack retransmission request, dynamic programming

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“…4. Regions of correct decoding (D) and secret transmission (S) of [2], corresponding to equations (20) and (21).…”

Section: B Example: Discrete Channel Statesmentioning

confidence: 99%

Rate Adaptation for Secure HARQ Protocols

Treust

Szczeciński

Labeau

2018

IEEE Trans.Inform.Forensic Secur.

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This paper investigates the incremental-redundancy hybrid-automatic repeat request (IR-HARQ) transmission over independent block-fading channels in the presence of an eavesdropper, where the secrecy of the transmission is ensured via introduction of dummy-messages. Since the encoder only knows the statistics of the channel state, the secrecy and the reliability are defined in a probabilistic framework. Unlike previous works on this subject, we design a coding strategy tailored to IR-HARQ by splitting the dummy-message rate over several rate parameters. These additional degrees of freedom improve the match between the dummy-message rates and the realizations of the eavesdropper channels. We evaluate the performance in terms of secrecy outage probability, connection outage probability and throughput and we compare it with the benchmark paper by Tang et al. [2]. Numerical examples illustrate that, comparing to existing alternatives, splitting of the dummy-message rate provides higher throughput and lower expected duration/average delay.Index Terms-hybrid automatic repeat request, physical layer security, state-dependent wiretap channel, channel state information, secrecy outage probability and secrecy throughput.

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Design of Cross-Packet Channel Coding with Low-Density Parity-Check Codes

Cited by 8 publications

References 7 publications

Design of diversity-achieving LDPC codes for H-ARQ with cross-packet channel coding

Design of diversity-achieving LDPC codes for H-ARQ with cross-packet channel coding

Generalized HARQ Protocols with Delayed Channel State Information and Average Latency Constraints

Rate Adaptation for Secure HARQ Protocols

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