On Lattice-Code Based Multiple Access With Imperfect Channel State Information

Yiyu Yin; Junren Qin; Tao Yang; Fan Jiang; Rongke Liu

doi:10.1109/LCOMM.2025.3606816

On Lattice-Code Based Multiple Access With Imperfect Channel State Information

Yiyu Yin
, Junren Qin^*
, Tao Yang^*
, Fan Jiang
, Rongke Liu

^*Corresponding author for this work

School of Electronic and Information Engineering

Beihang University
Peng Cheng Laboratory

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This letter studies lattice-code based multiple access (LCMA) degraded with imperfect channel state information (CSI). We present the achievable rate of the LCMA scheme under imperfect CSI, and formulate a new LCMA design problem. We then present a two-step approach to solve this problem. Numerical results demonstrate that our optimized LCMA significantly outperforms conventional MMSE and MMSE with successive interference cancellation (MMSE-SIC) at practical levels of channel estimation error by 5 dB when BLER ≤ 10^-2 in 8-by-4 MIMO configuration with BPSK and rate 1/2 LDPC code.

Original language	English
Pages (from-to)	2631-2635
Number of pages	5
Journal	IEEE Communications Letters
Volume	29
Issue number	11
DOIs	https://doi.org/10.1109/LCOMM.2025.3606816
State	Published - 2025

Keywords

MMSE
Multiple-access
imperfect CSI
lattice code
multi-user MIMO

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10.1109/LCOMM.2025.3606816

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title = "On Lattice-Code Based Multiple Access With Imperfect Channel State Information",

abstract = "This letter studies lattice-code based multiple access (LCMA) degraded with imperfect channel state information (CSI). We present the achievable rate of the LCMA scheme under imperfect CSI, and formulate a new LCMA design problem. We then present a two-step approach to solve this problem. Numerical results demonstrate that our optimized LCMA significantly outperforms conventional MMSE and MMSE with successive interference cancellation (MMSE-SIC) at practical levels of channel estimation error by 5 dB when BLER ≤ 10-2 in 8-by-4 MIMO configuration with BPSK and rate 1/2 LDPC code.",

keywords = "MMSE, Multiple-access, imperfect CSI, lattice code, multi-user MIMO",

author = "Yiyu Yin and Junren Qin and Tao Yang and Fan Jiang and Rongke Liu",

note = "Publisher Copyright: {\textcopyright} 1997-2012 IEEE.",

year = "2025",

doi = "10.1109/LCOMM.2025.3606816",

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volume = "29",

pages = "2631--2635",

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TY - JOUR

T1 - On Lattice-Code Based Multiple Access With Imperfect Channel State Information

AU - Yin, Yiyu

AU - Qin, Junren

AU - Yang, Tao

AU - Jiang, Fan

AU - Liu, Rongke

PY - 2025

Y1 - 2025

N2 - This letter studies lattice-code based multiple access (LCMA) degraded with imperfect channel state information (CSI). We present the achievable rate of the LCMA scheme under imperfect CSI, and formulate a new LCMA design problem. We then present a two-step approach to solve this problem. Numerical results demonstrate that our optimized LCMA significantly outperforms conventional MMSE and MMSE with successive interference cancellation (MMSE-SIC) at practical levels of channel estimation error by 5 dB when BLER ≤ 10-2 in 8-by-4 MIMO configuration with BPSK and rate 1/2 LDPC code.

AB - This letter studies lattice-code based multiple access (LCMA) degraded with imperfect channel state information (CSI). We present the achievable rate of the LCMA scheme under imperfect CSI, and formulate a new LCMA design problem. We then present a two-step approach to solve this problem. Numerical results demonstrate that our optimized LCMA significantly outperforms conventional MMSE and MMSE with successive interference cancellation (MMSE-SIC) at practical levels of channel estimation error by 5 dB when BLER ≤ 10-2 in 8-by-4 MIMO configuration with BPSK and rate 1/2 LDPC code.

KW - MMSE

KW - Multiple-access

KW - imperfect CSI

KW - lattice code

KW - multi-user MIMO

UR - https://www.scopus.com/pages/publications/105015202498

U2 - 10.1109/LCOMM.2025.3606816

DO - 10.1109/LCOMM.2025.3606816

M3 - 文章

AN - SCOPUS:105015202498

SN - 1089-7798

VL - 29

SP - 2631

EP - 2635

JO - IEEE Communications Letters

JF - IEEE Communications Letters

IS - 11

ER -

On Lattice-Code Based Multiple Access With Imperfect Channel State Information

Abstract

Keywords

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