Search this site
Embedded Files
Skip to main content
Skip to navigation
VLSI LAB, HKUST
HOME
PEOPLE
RESEARCH
PUBLICATIONS
MISCELLANEOUS
VLSI LAB, HKUST
HOME
PEOPLE
RESEARCH
PUBLICATIONS
MISCELLANEOUS
More
HOME
PEOPLE
RESEARCH
PUBLICATIONS
MISCELLANEOUS
VLSI Architectures for Digital Baseband
Introduction
Digital baseband
Source coding, Channel coding, Modulation
Channel coding
Used for correcting the transmission errors
Popular channel codes used in communication systems : Polar codes, LDPC codes
Polar Codes
An emerging channel code proposed by Erdal Arikan, Bilkent University, Turkey. It is selected as one of the channel codes in standard of 5G eMBB
Channels are polarized, i.e., one channel is either especially good or especially bad.
List successive cancellation decoding
The most popular decoding scheme of polar codes due to its extraordinary error correction performance
The large the list size, the better the error correction performance but the higher the complexity
Hardware Architecture of LSCD with Large List Size for Polar Codes
Low-latency Architecture
With two newly proposed algorithms
Double thresholding scheme (DTS)
Selective expansion
Achieved spec: 460 Mbps (UMC 90nm) for LSCD with N=1024, L=16
Both the decoding throughput and the list size are doubled when compared with the state-of-the-art architectures
High-throughput Architecture
With two newly proposed algorithms
Multi-bit DTS
Partial G-node look-ahead
Achieved spec: 1103/977/827 Mbps (UMC 90nm) for LSCD with N=1024, L=8/16/32
The first architecture supports L=32 on ASIC
Reducing Hardware Complexity of the Functional Blocks in Polar Decoders
High Performance Partial-Sum Network (HPPSN)
A novel folded HPPSN architecture is proposed to seamlessly integrate with the folded PE architecture of the semi-parallel SCD.
Experimental results show the advantages of the proposed decoding architectures in both performance and area aspects.
List High Performance Partial-Sum Network (LHPPSN)
a high-performance area-efficient partial-sum generation unit is proposed for semi-parallel LSCD
Experimental results show that the area and delay of the proposed designs are significantly reduced
Selected Publications about Polar Codes
Google Sites
Report abuse
Google Sites
Report abuse