Multi-User MIMOBruno ClerckxClaude OestgesMimo Wireless Networks (Second Edition)
在MU-MIMO模式下，不支持空间分集传输（STBC）技术。在应用MU-MIMO技术时，每个用户的空时流会被汇聚到空间映射模块，数据流中的每个子载波信号需要与量化键控（QK）相乘。此时，QK是之前AP与STA之间通过信令帧（如Sound NDP帧）通信得到的信道信息矩阵，即波束成形转向矩阵。关于QK的理解：假设[公式]，...
图3-37 transmit chain data path( MU-MIMO) 802.11ac协议相对于之前的802.11协议来说一个重大的技术演进就是DL MU-MIMO,即AP可以真正意义上同时与多个STA进行通信,对于采用MU-MIMO发送的数据从bit domain到frequency domain的cyclic shift之间的处理都需要以用户为单位进行分别处理,如图 3‑37所示。因为不同用户...
多用户多重输入多重输出 ...每个用户的资料流使用不同的权重值。多用户多重输入多重输出(Multi-User MIMO)也称为波束赋形或者预先编码,可最小化 … www.2cm.com.tw|基于2个网页 3. 多装置同步连网 甚至,随著新一代标准支援多装置同步连网(Multi-user MIMO)的新技术出现,使用者同时透过无线网路串流高画质...
Multi-user MIMO (MU-MIMO) is a protocol in the field of Computer Science that enables multiple client stations to receive independent data streams from a transmitting access point simultaneously, using spatial multiplexing to separate the data streams. ...
This chapter first discusses a mathematical model of the multi-user MIMO system and its channel capacity. Then, it presents the precoded transmission schemes, which is a specific means of implementing the multi-user MIMO system for the downlink. Controlled Vocabulary Terms channel capacity; MIMO ...
A 6x6 MIMO configuration for three users is used in this example, where the first user has three streams, second has one, and the third has two streams allocated to it. Different rate parameters and payload sizes for up to four users are specified as vector parameters. These are indexed ...
The HE multi-user format can be configured for an OFDMA transmission, a MU-MIMO transmission, or a combination of the two. This flexibility allows an HE-MU packet to transmit to a single user over the whole band, multiple users over different parts of the band (OFDMA), or multiple ...
An efficient high order multi-user multiple-input multiple-output (MU-MIMO) subspace detector is proposed. The detector employs joint modulation classification (MC) and subspace detection (SD), by which the modulation type of the interferer is estimated, while multiple decoupled streams are ...
Relay and MIMO (Multiple Input Multiple Output) techniques can significantly enhance system power efficiency, extend system coverage and are considered promising candidates for next generation wireless communication systems. In this paper, we propose a multi-user MIMO relay protocol which utilizes self-...