Transmitting/receiving apparatus and transmitting/receiving method

一种接收装置、发送权的技术，应用在空间发射分集、基带系统零部件、多路复用通信等方向，能够解决判断不正确、传输效率下降等问题，达到提高传输效率的效果
CN1914841AInactive Publication Date: 2007-02-14OPTIS WIRELESS TECH LLC
3 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
OPTIS WIRELESS TECH LLC
Publication Date
2007-02-14
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Provided is a transmitting and receiving device that makes correct judgment on directionality-controlled spatial division multiplexing communication to improve transmission efficiency. In this device: the channel estimation unit (205) performs channel estimation using known symbols included in the received signal; the channel change determination unit (206) obtains the channel estimation result estimated in the previous process and the result of this time. The correlation value between the estimated channel estimation results is used to obtain the size of the channel change, so that it can be judged based on the size of the channel change whether to perform spatial division multiplexing communication with directional control or to perform spatial division multiplexing without directional control. communication. When the wireless receiving unit (107) receives the transmission weight, the switching unit (108) outputs the received transmission weight to the multiplication units (103-1 to 103-n). When the wireless receiving unit (107) receives a signal including an instruction to perform spatial division multiplexing communication without directivity control, the switching unit (108) outputs "1" indicating no directivity control as a transmission weight to the multiplier Unit (103-1 to 103-n).
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a sending and receiving device and a sending and receiving method, in particular to a sending and receiving device and a sending and receiving method suitable for space division multiplexing communication. Background technique

[0002] As a method of enabling large-capacity communication without expanding the frequency band, there is a Multiple-Input Multiple-Output (MIMO: Multiple-Input Multiple-Output) technology that uses a plurality of transmitting and receiving antennas. Space Division Multiplexing (SDM: Space Division Multiplexing), as a multiple-input multiple-output (MIMO) technology, configures multiple antennas on the transmitter and receiver, and transmits different and independent signals from each antenna in the transmitter. Signal; in the receiver, according to the directivity of multiple antenna arrays, multiple different signals transmitted at the same time are spatially separated and received. Accordin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More