Efficient helicopter−satellite communication scheme based on check-hybrid LDPC coding

Wang, Ping; Yin, Liuguo; Lu, Jianhua

doi:10.26599/tst.2018.9010038

Cited by 24 publications

(12 citation statements)

References 12 publications

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“…As an alternative to density evolution, EXIT charts approach is a useful tool to analyze the decoding thresholds of LDPC code ensembles and GLDPC code ensembles [35]- [37]. However, it has been found that conventional EXIT charts based iterative decoding threshold analysis on spatially coupled codes is disabled owing to the appearance of macro-convergence and micro-convergence in the decoding trajectory [38].…”

Section: Decoding Thresholds Of Sc-gldpc Codesmentioning

confidence: 99%

Spatially Coupled Generalized Low-Density Parity-Check Codes Over Class-A Impulsive Noise Channels

Wang

Yin

2019

IEEE Access

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In this paper, a class of spatially coupled generalized low-density parity-check (SC-GLDPC) codes with minimum coupling width is introduced to mitigate the Class-A impulsive noise. Codes with minimum coupling width are beneficial to simple code structure, short window decoding delay, and small rate-loss. The SC-GLDPC code is constructed by coupling the multiple identical generalized low-density parity-check (GLDPC) codes. Decoding thresholds over impulsive channels are derived by a recursive extrinsic information transfer function approach and are further estimated by the fast prediction approach. An edge spreading optimization method is proposed to design SC-GLDPC codes with minimum coupling width. The simulation results show that the optimized SC-GLDPC codes with minimum coupling width can show capacity-approaching property over impulsive channels. Benefitting from spatial coupling and generalized check nodes the SC-GLDPC codes show better bit error rate performance over impulsive channels, compared with GLDPC codes and spatially coupled low-density parity-check (SC-LDPC) codes.INDEX TERMS Impulsive noise, spatial coupling, generalized low-density parity-check codes, minimum coupling width, iterative decoding.

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Section: Decoding Thresholds Of Sc-gldpc Codesmentioning

confidence: 99%

Spatially Coupled Generalized Low-Density Parity-Check Codes Over Class-A Impulsive Noise Channels

Wang

Yin

2019

IEEE Access

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“…These schemes are really effective when the code length is sufficient, but may be difficult to implement in practical systems. When we consider the design of practical coding schemes, another valuable metric is the BER [15,16]. In fact, it is difficult for the eavesdropper to recover any information from the decoded message when she experiences a BER of about 0.5 and the errors are randomly distributed.…”

Section: Introductionmentioning

confidence: 99%

Code‐Hopping Based Transmission Scheme for Wireless Physical‐Layer Security

Yin

Hao

2018

Wireless Communications and Mobile Computing

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Due to the broadcast and time-varying natures of wireless channels, traditional communication systems that provide data encryption at the application layer suffer many challenges such as error diffusion. In this paper, we propose a code-hopping based secrecy transmission scheme that uses dynamic nonsystematic low-density parity-check (LDPC) codes and automatic repeat-request (ARQ) mechanism to jointly encode and encrypt source messages at the physical layer. In this scheme, secret keys at the transmitter and the legitimate receiver are generated dynamically upon the source messages that have been transmitted successfully. During the transmission, each source message is jointly encoded and encrypted by a parity-check matrix, which is dynamically selected from a set of LDPC matrices based on the shared dynamic secret key. As for the eavesdropper (Eve), the uncorrectable decoding errors prevent her from generating the same secret key as the legitimate parties. Thus she cannot select the correct LDPC matrix to recover the source message. We demonstrate that our scheme can be compatible with traditional cryptosystems and enhance the security without sacrificing the error-correction performance. Numerical results show that the bit error rate (BER) of Eve approaches 0.5 as the number of transmitted source messages increases and the security gap of the system is small.

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“…Due to its high-speed data rate, orthogonal frequency division multiplexing (OFDM) [1,2] has been widely applied to the 4G mobile communication system, Wi-Fi, and some military communication systems [3][4][5][6][7]. However, its signals may have high peak-to-average power ratio (PAPR).…”

Section: Introductionmentioning

confidence: 99%

A CCM‐Based OFDM System with Low PAPR for Sparse Source

Yang

Wang

Huang

2018

Wireless Communications and Mobile Computing

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Orthogonal frequency division multiplexing (OFDM) usually suffers high peak-to-average power ratio (PAPR). As shown in this paper, PAPR becomes even severe for sparse source due to many identical nonzero frequency OFDM symbols. Thus, this paper introduces compressive coded modulation (CCM) in order to restrain PAPR by reducing identical nonzero frequency symbols for sparse source. As a result, the proposed CCM-based OFDM system, together with iterative clipping and filtering, can efficiently restrain the high PAPR for sparse source. Simulation results show that it outperforms about 4 dB over the traditional OFDM system when source sparsity is 0.1.

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Efficient helicopter−satellite communication scheme based on check-hybrid LDPC coding

Cited by 24 publications

References 12 publications

Spatially Coupled Generalized Low-Density Parity-Check Codes Over Class-A Impulsive Noise Channels

Spatially Coupled Generalized Low-Density Parity-Check Codes Over Class-A Impulsive Noise Channels

Code‐Hopping Based Transmission Scheme for Wireless Physical‐Layer Security

A CCM‐Based OFDM System with Low PAPR for Sparse Source

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