Publications by Yifei Shen | EPFL Graph Search

Turbo Product Code-aided Spatiotemporal 2-d Coded Mimo for Urllc

The ultra-reliable low-latency communication (URLLC) scenario beyond the fifth-generation mobile networks requires latency to shift from ms-level to ms-level while maintaining low packet error rates. Short block-length codes can reduce latency but suffer f ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2025

Iterative Logistic Weight Based Chase Decoder for Open Forward Error Correction

Andreas Peter Burg, Yifei Shen, Yuqing Ren

We propose an iterative logistic weight based decoder for open forward error correction (oFEC) codes. Compared to Chase-Pyndiah decoding with 93 error patterns, our decoder achieves similar performance with lower complexity. ...

Optica Publishing Group2025

Toward Universal Belief Propagation Decoding for Short Binary Block Codes

Andreas Peter Burg, Yifei Shen, Yuqing Ren

Belief propagation (BP) decoding has been recognized for its capacity-approaching performance and high throughput when decoding long low-density parity-check (LDPC) codes. However, the application of BP decoding for short codes is hindered by dense parity- ...

2025

TRIP: Tree Search-Based Iterative Detection and Decoding for Polar-Coded MIMO Systems

Yifei Shen

With the rapid development of wireless communications, future applications call for an increase in reliability performance. Thanks to the soft information exchange between detection and decoding, iterative detection and decoding (IDD) exhibits superior per ...

2025

Edge-Spreading Raptor-Like LDPC Codes for 6G Wireless Systems

Andreas Peter Burg, Yifei Shen, Yuqing Ren

Institute of Electrical and Electronics Engineers (IEEE)2025

A Generalized Adjusted Min-Sum Decoder for 5G LDPC Codes: Algorithm and Implementation

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Yifei Shen, Yuqing Ren, Hassan Harb

5G New Radio (NR) has stringent demands on both performance and complexity for the design of low-density parity-check (LDPC) decoding algorithms and corresponding VLSI implementations. Furthermore, decoders must fully support the wide range of all 5G NR bl ...

Ieee-Inst Electrical Electronics Engineers Inc2024

Belief Propagation Decoding for Short-Length Codes Based on Sparse Tanner Graph

Yifei Shen, Yuqing Ren

In this letter, we present a novel approach to improve belief propagation (BP) decoding performance by sparsifying the Tanner graph. Our proposed method first constructs a low-weight parity-check (LWPC) matrix with increased rows based on the original pari ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2024

High-Throughput and Flexible Belief Propagation List Decoder for Polar Codes

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Chuan Zhang, Andreas Toftegaard Kristensen, Yifei Shen, Yuqing Ren

Due to its high parallelism, belief propagation (BP)decoding is amenable to high-throughput applications and thusrepresents a promising solution for the ultra-high peak datarate required by future communication systems. To bridge theperformance gap compare ...

Ieee-Inst Electrical Electronics Engineers Inc2024

A Node-Based Polar List Decoder With Frame Interleaving and Ensemble Decoding Support

Andreas Peter Burg, Yifei Shen, Yuqing Ren

Node-based successive cancellation list (SCL) decoding has received considerable attention in wireless communications for its significant reduction in decoding latency, particularly with 5G New Radio (NR) polar codes. However, the existing node-based SCL d ...

2024

Towards 6G: Configurable High-Throughput Decoder Implementation for SC-LDPC Codes

Wuzhou Song, Andreas Peter Burg, Yifei Shen, Yuqing Ren

Spatially-coupled low-density parity-check (SC-LDPC) codes are considered an important candidate for the upcoming 6G standardization, owing to their superior error-correction capability and practical decoding complexity. However, current high-throughput SC ...

IEEE2024

A Low-Latency and High-Performance SCL Decoder with Frame-Interleaving

Andreas Peter Burg, Yifei Shen, Yuqing Ren

In this paper, we describe a frame-interleaving hardware architecture for a generalized node-based successive cancellation list (SCL) decoder. By efficiently reusing otherwise idle computational units, two independent frames can be decoded simultaneously, ...

Institute of Electrical and Electronics Engineers Inc.2024

A GRANDAB Decoder with 8.48 Gbps Worst-Case Throughput in 65nm CMOS

Andreas Peter Burg, Thomas Christoph Müller, Alexandre Sébastien Julien Levisse, Andreas Toftegaard Kristensen, Yifei Shen, Yuqing Ren

We present an error correction code (ECC) decoder based on the Guessing Random Additive Noise Decoding (GRAND) with ABandonment (GRANDAB) algorithm for applications that require constant throughput and fixed decoding latency in the Gbps range. This high co ...

IEEE Computer Society2024

Belief-Selective Propagation Detection for MIMO Systems

Yifei Shen

Compared to the linear MIMO detectors, the Belief Propagation (BP) detector has shown greater capabilities in achieving near-optimal performance and better nature to iteratively cooperate with channel decoders. Aiming at real applications, recent works mai ...

Ieee-Inst Electrical Electronics Engineers Inc2023

List Ordered Statistics Decoders for Polar Codes

Andreas Peter Burg, Chuan Zhang, Yifei Shen

The de-facto standard decoding algorithm for polar codes, successive cancellation list (SCL) decoding, is a breadth-first search algorithm. By keeping a list of candidate codewords, SCL decoding improves the performance as the list size L increases. Howeve ...

IEEE2022

A Sequence Repetition Node-Based Successive Cancellation List Decoder for 5G Polar Codes: Algorithm and Implementation

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Chuan Zhang, Andreas Toftegaard Kristensen, Yifei Shen, Yuqing Ren

Due to the low-latency and high-reliability require-ments of 5G, low-complexity node-based successive cancellation list (SCL) decoding has received considerable attention for use in 5G communications systems. By identifying special constituent codes in the ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022

Dynamic SCL Decoder With Path-Flipping for 5G Polar Codes

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Chuan Zhang, Yifei Shen

Since polar were ratified as part of the 5G standard, low-complexity polar decoders with close-to-optimum error-rate performance have received significant attention. Compared to successive cancellation (SC) decoding, both SC list and SC flip decoding can i ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022

Fast Sequence Repetition Node-Based Successive Cancellation List Decoding for Polar Codes

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Chuan Zhang, Andreas Toftegaard Kristensen, Yifei Shen, Yuqing Ren

Compared with the bit-wise successive cancellation list (SCL) decoding of polar codes, the node-based Fast SCL decoding significantly reduces the decoding latency by identifying special constituent codes and decoding these in parallel. To further reduce th ...

IEEE2022