Control method of MIMO channel simulator and implementing apparatus thereof

A control method and channel simulation technology, applied in transmission monitoring, space transmit diversity, electrical components, etc., can solve the problems of time or frequency fading, inapplicability of multiple antennas, etc., and achieve the effect of low price, simple structure and multiple functions

Inactive Publication Date: 2007-04-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem that the traditional SISO (single-input-single-output) channel model is a one-dimensional or two-dimensional channel, which only considers f

Method used

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  • Control method of MIMO channel simulator and implementing apparatus thereof
  • Control method of MIMO channel simulator and implementing apparatus thereof
  • Control method of MIMO channel simulator and implementing apparatus thereof

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Experimental program
Comparison scheme
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specific Embodiment approach 1

[0027] Specific embodiment one: referring to Fig. 1, this specific embodiment provides a kind of control method of MIMO channel emulator, and it carries out according to the following steps successively:

[0028] Step 1, MIMO channel simulator system initialization;

[0029] Step 2, obtaining space-time coded information data through the multi-channel buffer serial port, the data signal matrix is ​​S(k);

[0030]Step 3, select the type of environment from the system operation interface, this type is a typical urban area, a poor urban area or a rural area;

[0031] Step 4, according to different environments, input the channel parameters from the system operation interface, the channel parameters include the antenna parameters of the base station and the mobile station, that is, select the number of antennas M, N and the spacing d of the antennas, the characteristics of each resolvable path , that is, the number L of resolvable paths between the transmitting and receiving ante...

specific Embodiment approach 2

[0070] Specific embodiment two: referring to Fig. 4, realize the device of above-mentioned control method based on DSP, it is characterized in that described device is a MIMO channel emulator, it is made up of DSP algorithm module 1, synchronous dynamic memory 2, flash memory 3, asynchronous serial communication module 4 and the level conversion module 5, the full-duplex multi-channel buffer serial port of the DSP algorithm module 1 is used to receive multi-channel space-time coded data and send out the data after the analog channel, the DSP algorithm module 1 The address bus is connected with the flash memory 3 for storing different channel simulation programs, the synchronous dynamic memory 2 for storing different channel environment data and the address information transmission end of the asynchronous serial communication module 4, and the data bus of the DSP algorithm module 1 is connected with the address information transmission end of the asynchronous serial communication...

specific Embodiment approach 3

[0071] Embodiment 3: Referring to FIG. 4 and FIG. 5 , the difference between this embodiment and Embodiment 2 is that this embodiment adopts the DSP chip of TI Company to realize the DSP algorithm module 1 . As shown in Figure 5, the model that described DSP algorithm module 1 adopts is the digital signal processor U1 of TMS320VC5509A, and U1 receives through three full-duplex multi-channel buffered serial ports (MCBSP0, MCBSP1, MCBSP2) The data, and then use the DSP to run the channel simulation algorithm program to complete the channel simulation, this module is the core module of the entire space-time channel simulator. The function pins of the above three full-duplex multi-channel buffered serial ports and the corresponding relationship with the U1 pin are shown in the table below.

[0072] Three full-duplex multi-channel buffered serial ports

Function pin

The corresponding pin of U1

MCBSP0

DSP CLKR0

CLKR0

DSP DR0

DR0

DSP ...

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Abstract

The invention relates to an MIMO channel simulator control method and the implementing device thereof, relating to wireless communication simulating system. And it comprises DSP algorithm module, synchronous dynamic memory, flash memory, asynchronous serial communication module and level converting module, and considers both time and frequency fading and selective space fading, and considers corresponding selective frequency fading by PDP, corresponding selective time fading by DPSD and corresponding selective space fading by PAS in the model establishing course. And the simulator has low price and simple structure.

Description

technical field [0001] The present invention relates to a wireless communication simulation system. Background technique [0002] MIMO technology has become one of the key technologies of B3G / 4G and the new generation of wireless communication systems. Unlike traditional single-antenna systems, MIMO systems use multi-path propagation of wireless channels to develop space resources and establish spatial parallel matrix transmission channels. Joint processing increases the capacity and reliability of wireless communication systems. Since the space-time characteristics of MIMO channels are the key factors determining the performance of space-time processing, exploring the space-time characteristics of MIMO wireless channels has become the focus of research on MIMO communication technology, and it is also the most challenging. Developing a reasonable MIMO wireless channel model to simulate various actual channel environments is the starting point for evaluating the performance ...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B7/02H04B1/707H04B7/04H04B17/391
Inventor 孟维晓张超孙华丽
Owner HARBIN INST OF TECH
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