多重入力多重出力水中音響通信のバリエーションベイズ推論に基づく低複雑度イテラティブ受信機
Wei-Zhe Li1,2, Xiao Han1,3, Yi-Zhen Jia1,2
1National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China.
The Journal of the Acoustical Society of America
|February 13, 2026
まとめ
この研究では,変数ベイズ推論 (VBI) を使用した水中音響通信のための低複雑性受信機を導入しています. この方法は,チャネルの推定と均等化を強化し,複数入力,複数出力 (MIMO) システムの計算負荷を大幅に軽減します.
科学分野:
- 水中アコースティック通信
- シグナル処理 信号処理
- 情報理論は情報理論である.
背景:
- 高性能受信機は,特に複数の入力,複数の出力 (MIMO) システムにおいて,水中の音響通信に不可欠です.
- 受信器の複雑さを管理することは,これらの要求の厳しい環境における重要な課題です.
研究 の 目的:
- 水中音響通信のための低複雑性のMIMO受信機を提案する.
- 変数ベイズ推論 (VBI) を使用してチャネル推定と均等化の効率を高めるために.
主な方法:
- VBIに基づいた繰り返しチャネル推定モデルを開発し,高次元のチャネルを稀少で低次元のベクトルに分解しました.
- チャンネル推定のためのVBIフレームワーク (TC-VAMP-VBI) にベクトル近似メッセージ伝送 (VAMP) テクニックを統合しました.
- VBI フレームワーク内で受動的な時間逆転を使用してシリアル・イテラティブ・エクワライゼーション・アルゴリズムを提案した.
主要な成果:
- 提案されたアルゴリズムは,MIMOシステムにおけるコンピューティングの複雑さを大幅に削減します.
- 短いデータブロックでも,堅実なチャネル推定性能を維持しました.
- シミュレーションとフィールド実験データを用いて検証.
結論:
- VBIベースの低複雑性MIMO受信機は,水中音響通信のための実用的なソリューションを提供します.
- TC-VAMP-VBIチャネル推定と被動時間逆転均等化は,パフォーマンスを確保しながら,システムの複雑さを効果的に軽減します.
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