A Novel Algorithm to Design Rate-Adaptive Irregular LDPC Codes

Mahalakshmi, R.; Bhuvaneshwari, P. V.; Tharini, C.; Bhaskar, Vidhyacharan

doi:10.1007/s11277-020-07223-3

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…50 Irregular LDPC codes are more flexible as compared to regular due to their rate adaptive feature inherent to their design. 51 An LDPC code is regular when the parity check matrix H has same constant value of row and column weight. The weight of a row or a column is the number of nonzero entries in H. In the Tanner graph representation of an LDPC code a check node corresponds to a row of H, while a variable node corresponds to a column of H. The code rate R is given as…”

Section: Block-circulant Ldpc (Bc-ldpc) Codementioning

confidence: 99%

“…The regular code was put forward by Gallager whereas irregular LDPC was proposed by Luby et al in year 2001 50 . Irregular LDPC codes are more flexible as compared to regular due to their rate adaptive feature inherent to their design 51 . An LDPC code is regular when the parity check matrix H has same constant value of row and column weight.…”

Section: Advanced Coding Schemesmentioning

confidence: 99%

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Advanced channel coding schemes for B5G/6G networks: State‐of‐the‐art analysis, research challenges and future directions

Gautam,

Thakur,

Singh

2024

Int J Communication

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SummaryAs a consequence of continuing demand for additional capacity and higher quality data transmission, channel coding as a key component of a digital communication network has progressed from a classical single pair, point‐to‐point information theoretic application to a class of coding techniques with diverse parameters. The heterogeneous requirements of B5G/6G networks technology have made flexibility of code parameters the main desired feature while designing channel codes. Owing to this, channel coding techniques have evolved to support enabling applications that depend on different factors such as latency, reliability, energy efficiency and throughput. We review and discuss the application of new techniques, modifications in the design and construction of modern channel coding schemes, including block, convolutional, rateless and space‐time codes. Further, the error correction performance of mainstream channel decoders for LDPC, polar and turbo codes is compared and analysed for their attainable error rate. The aim of this study is to highlight the adaptability of the discussed coding schemes for the forthcoming cellular network landscape. This article also addresses the implementational challenges of high throughput, low latency and machine type communication scenarios. Moreover, some recent studies exploring the role of machine learning for optimisation of B5G/6G networks are classified and discussed. Concluding, research areas pertaining to the scalability of error control coding for next generation networking are addressed.

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Section: Block-circulant Ldpc (Bc-ldpc) Codementioning

confidence: 99%

Section: Advanced Coding Schemesmentioning

confidence: 99%

Advanced channel coding schemes for B5G/6G networks: State‐of‐the‐art analysis, research challenges and future directions

Gautam,

Thakur,

Singh

2024

Int J Communication

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“…16, and IEEE 802.22 [10,11]. Other than to be a part of many wireless standards, these codes are used for many communication paradigms such as satellite communications, UWB (ultra-wideband) communications [12], cognitive radio networks [13], and healthcare systems [14]. Several forms of LDPC Codes have been explored till date.…”

Section: Introductionmentioning

confidence: 99%

Novel Energy Optimized LDPC Codes for Next-Generation MIMO OFDM Systems

Arora,

bala,

Mijwil

2023

ijcsm

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With the increasing prevalence of internet services in our daily lives, there is a growing demand for spectrum, resulting in a shortage of available frequencies. This is primarily due to the recent surge in subscribers seeking faster and more dependable data rates. Researchers globally have suggested various solutions to combat the spectrum shortage, such as technology, modulation schemes, beamforming, intelligent reflective surfaces, and channel coding schemes. With respect to channel coding, multiple codes have been proposed to overcome challenging and uncertain channel conditions. The paper introduces a DWT-incorporated LDPC STBC system as a solution to meet the rigorous demands of 5G deployment and use cases. A comparative analysis of the proposed codes is conducted to assess their suitability for next-generation communication networks, considering SNR and BER. Results indicate that the suggested code performs optimally, achieving a BER of 10-4 at 7dB SNR for Rayleigh Faded wireless channel. Therefore, the suggested code is deemed the most suitable option for the deployment of 5G and beyond systems.

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