Novel Design of Irregular Polar Codes for Latency Reduction in Fast Polar Decoders

Khoshnevis, Hossein; Cao, Congzhe; Chang, Deyuan; Li, Chuandong

doi:10.1109/ccece53047.2021.9569125

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…Decoding polar codes involves traversing an inverted structure compared to the encoder (see Figure 6). The current approach favors the computationally efficient successive cancellation decoder (SCD) [42,44]. The decoding process begins with observations y i and, for a binary AWGN channel, the log-likelihood ratio (LLR) is calculated as l i = −2y i √ 2RE b /N 0 .…”

Section: System Design Parameters and Implementation Detailsmentioning

confidence: 99%

Low-Latency Wireless Network Extension for Industrial Internet of Things

Fletcher,

Paulz,

Ridge

et al. 2024

Sensors

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The timely delivery of critical messages in real-time environments is an increasing requirement for industrial Internet of Things (IIoT) networks. Similar to wired time-sensitive networking (TSN) techniques, which bifurcate traffic flows based on priority, the proposed wireless method aims to ensure that critical traffic arrives rapidly across multiple hops to enable numerous IIoT use cases. IIoT architectures are migrating toward wirelessly connected edges, creating a desire to extend TSN-like functionality to a wireless format. Existing protocols possess inherent challenges to achieving this prioritized low-latency communication, ranging from rigidly scheduled time division transmissions, scalability/jitter of carrier-sense multiple access (CSMA) protocols, and encryption-induced latency. This paper presents a hardware-validated low-latency technique built upon receiver-assigned code division multiple access (RA-CDMA) techniques to implement a secure wireless TSN-like extension suitable for the IIoT. Results from our hardware prototype, constructed on the IntelFPGA Arria 10 platform, show that (sub-)millisecond single-hop latencies can be achieved for each of the available message types, ranging from 12 bits up to 224 bits of payload. By achieving one-way transmission of under 1 ms, a reliable wireless TSN extension with comparable timelines to 802.1Q and/or 5G is achievable and proven in concept through our hardware prototype.

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Section: System Design Parameters and Implementation Detailsmentioning

confidence: 99%

Low-Latency Wireless Network Extension for Industrial Internet of Things

Fletcher,

Paulz,

Ridge

et al. 2024

Sensors

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show abstract

“…One more effective parameter for the latency and throughput is the relationship between the encoder graph and the tree-pruning technique. Indeed, recent works have shown that the polar code can be designed for the tree-pruning technique to achieve low latency [32], [33]. However, since our study is targeting the set of 5G NR polar codes, introducing modifications to the design of the polar codes specified by 3GPP is not an available option to explore.…”

Section: Architectural and Algorithmic Parametersmentioning

confidence: 99%

Latency and Complexity Analysis of Flexible Semi-Parallel Decoding Architectures for 5G NR Polar Codes

2022

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Polar codes are one of the most recent additions to the family of forward error correction (FEC) codes, having recently been adopted in the 5G New Radio (NR) standard for the control channel. However, the stringent requirements introduced by the 5G standard in terms of block length and code rate flexibility, along with low end-to-end latency and high error correction performance represent a major challenge for their hardware implementation. In this context, we study the impact of main code and decoder design parameters on the latency, throughput, and the hardware complexity of semi-parallel decoding architectures. The impact of these parameters on the hardware efficiency of semi-parallel architectures is significant. Therefore, we propose two multi-frame decoding approaches that increase the throughput and improve the utilisation rate of the processing units of these architectures. Detailed analytical and logic synthesis results are provided and compared for a large range of values in order to constitute a reference for the implementation of flexible, yet efficient FEC decoders for polar codes.

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Fast Polar Decoding With Successive Cancellation List Creeper Algorithm

Timokhin,

Ivanov

2024

IEEE Access

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Novel Design of Irregular Polar Codes for Latency Reduction in Fast Polar Decoders

Cited by 3 publications

References 16 publications

Low-Latency Wireless Network Extension for Industrial Internet of Things

Low-Latency Wireless Network Extension for Industrial Internet of Things

Latency and Complexity Analysis of Flexible Semi-Parallel Decoding Architectures for 5G NR Polar Codes

Fast Polar Decoding With Successive Cancellation List Creeper Algorithm

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