Simple Methods for Estimating Required SNR in Dual-Polarized MIMO Systems Under Limited XPD

IF 5.9 1区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Broadcasting Pub Date : 2026-06-01 Epub Date: 2026-04-21 DOI:10.1109/TBC.2026.3680043

Sungjun Ahn;Sung-Ik Park

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引用次数: 0

Abstract

This paper presents simple semi-analytical methods for estimating the required carrier-to-noise ratio (CNR) in multi-input multi-output (MIMO) broadcasting systems. The estimates are derived according to cross-polarization discrimination (XPD) level of the transmission channel, thereby evaluating the impact of cross-polarization interference. The proposed models convert known single-input single-output (SISO) system performance, e.g., CNR threshold measurements in ATSC A/327 [Annex A, 1], into the CNR required in MIMO transmission. Two classes of estimation are developed: one assuming perfect channel knowledge (Class P), and the other accounting for channel estimation errors and pilot boosting (Class E). In addition to the conventional single-layer configuration, estimations under layered division multiplexing (LDM) configurations are also addressed, where every layer is assumed to use MIMO. Closed-form expressions are provided for both layered and non-layered MIMO scenarios. The models offer a lightweight alternative to full-system simulations, enabling early-stage design evaluation and practical system planning in cross-polarized environments.

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有限XPD条件下双极化MIMO系统所需信噪比的简单估计方法

提出了一种估算多输入多输出（MIMO）广播系统所需载波噪声比（CNR）的简单半解析方法。根据传输信道的交叉极化判别（XPD）水平推导出估计值，从而评估交叉极化干扰的影响。所提出的模型将已知的单输入单输出（SISO）系统性能，例如ATSC A/327中的CNR阈值测量[附件A， 1]转换为MIMO传输所需的CNR。开发了两类估计：一类假设完全信道知识（P类），另一类考虑信道估计误差和导频增强（E类）。除了传统的单层配置外，还讨论了分层分复用（LDM）配置下的估计，其中假设每层都使用MIMO。为分层和非分层MIMO场景提供了封闭形式的表达式。该模型为全系统模拟提供了一种轻量级的替代方案，可以在交叉极化环境中进行早期设计评估和实际系统规划。

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来源期刊

IEEE Transactions on Broadcasting 工程技术-电信学

CiteScore

9.40

自引率

31.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The Society’s Field of Interest is “Devices, equipment, techniques and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.” In addition to this formal FOI statement, which is used to provide guidance to the Publications Committee in the selection of content, the AdCom has further resolved that “broadcast systems includes all aspects of transmission, propagation, and reception.”