Unlock instant, AI-driven research and patent intelligence for your innovation.

Channel measurement for wireless multi-input multi-output communication system

A multiple-input, multiple-output, channel measurement technology, applied in the field of multiple-input, multiple-output communication systems, can solve the problems of not being able to provide PDP, reconstructing channels, etc.

Active Publication Date: 2014-08-06
KEYSIGHT TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This assumption introduces measurement errors when the channel changes rapidly
In addition, the configuration of the above prior art cannot provide other statistical characteristics such as Doppler frequency offset and PDP (Power Delay Profile, power delay profile)
These problems make it impossible to reconstruct the channel precisely in time

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Channel measurement for wireless multi-input multi-output communication system
  • Channel measurement for wireless multi-input multi-output communication system
  • Channel measurement for wireless multi-input multi-output communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Embodiments of the present invention will be described below with reference to the drawings.

[0020] image 3 A block diagram of a wireless MIMO communication system 300 is shown. Such as image 3 As shown, the wireless MIMO communication system 300 includes a transmitter side (modules 303-305) and a receiver side (modules 306-308), wherein the transmitter side is used to generate and transmit communication signals, and the receiver side is configured via a MIMO channel 340 to receive communication signals. as from image 3 It can be seen that, in one embodiment, the communication system 300 is a 2×2 system. This means that the transmitter antenna array 305 of the communication system 300 includes two transmitter antennas, and the receiver antenna array 306 of the antenna system 300 includes two receiver antennas. Alternatively, more than two antennas or less than two antennas may be used to form each antenna array 305-306. image 3 Not all modules of system 300 ...

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

PUM

No PUM Login to View More

Abstract

The present invention provides a wireless MIMO communication system, which includes a transmitter antenna array and a receiver antenna array, the passage from one antenna of the transmitter antenna array to one antenna of the receiver antenna array forms a channel. The MIMO system also includes a channel measurement system that includes a transmitter subsystem, a receiver subsystem, and a synchronization subsystem. The transmitter subsystem is used to generate test frames, which are sent via the transmitter antenna array synchronously with the transmitter trigger signal. The receiver subsystem receives test frames from the transmitter antenna array via the receiver antenna array synchronously with the receiver trigger signal, and estimates each channel by calculating a channel impulse response for each received test frame. The channel impulse response corresponds to the timing of the transmitter trigger signal and the receiver trigger signal. The synchronization subsystem generates a transmitter trigger signal and a receiver trigger signal that are synchronized with each other.

Description

technical field [0001] The present invention generally relates to a Multiple-Input Multiple-Output (MIMO: Multiple-Input Multiple-Output) communication system, and particularly relates to channel measurement of a wireless MIMO communication system. Background technique [0002] A MIMO communication system typically includes multiple antennas on its transmitter and receiver sides to provide diversity in fading environments. This allows communication systems to provide significantly increased capacity, coverage and reliability. [0003] In the process of designing and optimizing such a MIMO system, it is extremely important to know the real radio channel characteristics between the transmitter and receiver. Channel sounding is typically used to obtain channel parameters. Channel sounding refers to the technique of stimulating a channel with a known and strictly defined signal waveform and estimating the channel response by measuring the output waveform. [0004] figure 1 A ...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04B7/04H04B7/26H04B17/00
CPCH04B17/336H04L12/2697H04L43/50H04B17/006
Inventor 井雅孔红伟张洪刚白自权赵旭沈丹勋
Owner KEYSIGHT TECH