Multiple input multiple output (MIMO) detecting method and MIMO detecting system utilizing correlation of signal channels

一种信道相关、信号检测的技术，应用在MIMO通信系统领域，能够解决增加BER、信道大估计偏差、大偏差等问题，达到减少硬件资源占用的效果

Inactive Publication Date: 2009-11-25
SAMSUNG ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the presence of burst noise, the channel will randomly appear a relatively large burst estimation deviation
At this time, if the signal is detected based on the channel with a large deviation, a relatively large deviation will appear or the BER of the signal judgment will be increased.

Method used

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  • Multiple input multiple output (MIMO) detecting method and MIMO detecting system utilizing correlation of signal channels
  • Multiple input multiple output (MIMO) detecting method and MIMO detecting system utilizing correlation of signal channels
  • Multiple input multiple output (MIMO) detecting method and MIMO detecting system utilizing correlation of signal channels

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Embodiment Construction

[0032] In order to clearly illustrate the new invention, firstly the prior art MMSE-OSIC 2 The method is introduced, and then the detection method of the present invention is described accordingly.

[0033] Suppose N T xN R The MIMO system can be expressed as:

[0034] y=Hx+z (1)

[0035] in y = [ y 1 y 2 · · · y N R ] T , Yes (N R ×1)-dimensional received signal vector; N T is the number of transmit antennas, N R is the number of receiving antennas.

[0036]

[0037] is the MIMO channel response; x = [ x 1 x ...

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Abstract

The invention relates to an orthogonal frequency division multiplexing (OFDM) symbol detecting method which comprises the following steps: receiving OFDM modulation symbols transmitted by a plurality of sending antennae; receiving the information of coherence time and / or the information of coherence bandwidth; after carrying out the signal channel estimations of the signal channels from the sending antennae, smoothing each signal channel estimation by utilizing the coherence time and / or the coherence bandwidth so as to obtain an average value which corresponds to a plurality of the signal channel estimations; and carrying out signal detection on the received OFDM symbols by utilizing the single channel estimation average value of the plurality of signal channels. The detecting method can simultaneously consider the time correlation and the frequency correlation of the signal channels.

Description

technical field [0001] The present invention relates to a MIMO (Multiple Input Multiple Output) communication system, in particular to a receiver-end detection method in the MIMO system, which is used for MIMO detection in existing and future information transmission systems. Background technique [0002] According to the method in the prior art, when a signal transmitted from the transmitting end is detected at the receiving end of the MIMO system, the channel is first estimated. According to the estimated channel, use MMSE-OSIC (minimum mean square error-serial interference cancellation) or MMSE-OSIC 2 The (Minimum Mean Square Error-Serial Interference Cancellation-Multiple Candidates) method detects the received data independently, that is, it considers that the channels are independent and uncorrelated. [0003] Taking 2x4MIMO detection as an example, it is necessary to detect the transmitted data x1 and x2. Using the detection method in the prior art, x1 needs to be d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04B7/08
CPCH04L5/0007H04J11/0026H04L25/0204H04L25/0222H04B7/0413H04B7/0854H04L27/2649
Inventor 黄周松周寒冰
Owner SAMSUNG ELECTRONICS CO LTD
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