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

mimo detection method

A detection method and technology of detectors, applied in the field of MIMO detection, can solve the problems of MIMO signal detection operation complexity and shorten detection time, etc., and achieve the effects of shortening detection time, reducing transmission delay, and reducing complexity

Inactive Publication Date: 2014-10-22
TSINGHUA UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to reduce the complexity of the MIMO signal detection operation in the MIMO-OFDM system and shorten the detection 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
  • mimo detection method
  • mimo detection method
  • mimo detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] Such as figure 1 As shown, the MIMO detection method of the present invention comprises the following steps:

[0028] A: Transfer the channel matrix and received signal data from the memory of the CPU device to the global memory of the GPU device;

[0029] In this step, use the function cudaMemcpyAsync to transfer the channel matrix and the received signal from the memory of the CPU device to the global memory of the GPU.

[0030] B: call the CUDA internal function according to the MMSE algorithm to calculate the symbol estimate value of the MMSE detector in parallel on the GPU, and store the gained symbol estimate value in the global memory;

[0031] Specificall...

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 invention discloses a Multiple Input Multiple Output (MIMO) detecting method, and relates to the technical field of MIMO signal detection. The method comprises the steps of A, transmitting a channel matrix and received signal data from an internal memory at a Central Processing Unit (CPU) equipment end to a global memory of a Graphics Processing Unit (GPU) equipment end; B, calling a Compute Unified Device Architecture (CUDA) internal function according to Minimum Mean Square Error (MMSE) algorithm, parallel-computing a symbol estimated value of an MMSE detector on multiple threads of the GPU, and storing the obtained symbol estimated value in the global memory; and C, transmitting the symbol estimated value from the global memory to the internal memory at the CPU equipment end. The method according to the invention employs a CPU and GPU cooperation work mode based on an assembly line, so that parallel procession of data can be carried out on the GPU while data are transmitted on the CPU and the GPU. In addition, the method according to the invention separates tasks by using three kernel functions, thereby achieving rapid synchronization, reducing computing complexity, decreasing transmission time delay, improving execution efficiency of the algorithm, and shortening detection time.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a MIMO detection method. Background technique [0002] In Distributed Wireless Communication System (DWCS), multiple-input multiple-output (MIMO) technology is increasingly combined with Orthogonal Frequency Division Multiplexing (OFDM) technology. This is because MIMO technology can increase the data transmission rate by enhancing the diversity and capacity of the wireless communication system, while OFDM technology can reduce the complexity of the equalizer by reducing the impact of frequency selective fading while improving spectrum efficiency. The MIMO-OFDM system composed of the organic combination of the two has been widely used in 4G wireless communication standards, such as LTE / LTE-Advanced, WiMAX, etc. [0003] In the MIMO-OFDM system, a key module is the MIMO signal detection module. Commonly used MIMO detection algorithms can be divided into linear det...

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): H04B17/00H04B7/04
Inventor 隋丹李云洲钟晓峰许希斌赵明王京
Owner TSINGHUA UNIV