Invention Application
US20150215009A1 System and Method for Early Termination in Iterative Null-Space Directed Singular Value Decomposition for MIMO
有权
用于MIMO的迭代空空间指向奇异值分解中的早期终止的系统和方法
- Patent Title: System and Method for Early Termination in Iterative Null-Space Directed Singular Value Decomposition for MIMO
- Patent Title (中): 用于MIMO的迭代空空间指向奇异值分解中的早期终止的系统和方法
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Application No.: US14163494Application Date: 2014-01-24
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Publication No.: US20150215009A1Publication Date: 2015-07-30
- Inventor: Ming Jia , Jianglei Ma , Peiying Zhu
- Applicant: FutureWei Technologies, Inc.
- Applicant Address: US TX Plano
- Assignee: FutureWei Technologies, Inc.
- Current Assignee: FutureWei Technologies, Inc.
- Current Assignee Address: US TX Plano
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04L25/03

Abstract:
Embodiments are provided for early termination of an iterative process of determining channel directions and transmissions in multi-user multiple-input and multiple-output (MU-MIMO) communications systems. In an embodiment, a base station or a user equipment (UE) calculates a multi-user channel matrix using a first iteration of a null-space singular value decomposition (SVD) based iterative zero-forcing (I-ZF) algorithm for multi-user MU-MIMO. The base station or UE repeats updating the multi-user channel matrix using a next iteration of the algorithm and the multi-user channel matrix calculated in a previous iteration, until the diagonal elements of the multi-user channel matrix are greater than the off-diagonal elements by a predefined threshold. Upon determining that the diagonal elements are greater than the off-diagonal elements by the predefined threshold, a plurality of transmission signals are calculated using the last updated multi-user channel matrix.
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