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Universal MIMO combined detecting method and apparatus for MIMO wireless communication system

A wireless communication system, multi-input multi-output technology, applied in the field of general joint detection methods and devices, can solve the problems of reduced system performance, fluctuating system performance, and reduced system adaptability

Inactive Publication Date: 2005-11-02
KONINK PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] From the above two examples, it can be seen that although the proposed MIMO structure and detection methods have achieved certain effects in interference elimination, they are all designed for a specific multiple access system, and no matter what the channel quality is Only the selected processing method can be used, the result is that the system performance fluctuates under different channel conditions, which greatly reduces the adaptability of the system
In addition, under normal circumstances, the existing technology always separates the interference cancellation of CAI, MAI and ISI, and processes them one by one.
The result of this is to reduce the performance of the entire system

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  • Universal MIMO combined detecting method and apparatus for MIMO wireless communication system
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  • Universal MIMO combined detecting method and apparatus for MIMO wireless communication system

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Embodiment Construction

[0037] The core idea of ​​the GMIMO-JD method proposed by the present invention is: the receiver at the receiving end estimates the quality of the wireless channel from the transmitting end to the receiving end according to the known signals in the received signal, and feeds back the estimated result of the channel quality to the transmitting end at the transmitting end. Then, the transmitter at the transmitting end and the receiver at the receiving end select the most suitable MIMO structure and joint detection method to process the data according to the channel quality estimation results, so as to optimally realize the Data transmission from the transmitter to the receiver.

[0038] It should also be pointed out here that in the time division duplex (TDD) mode, channel estimation is already performed during the establishment of the uplink, so the base station transmitter can learn the downlink channel characteristic information without uplink feedback. However, the TDD mode ...

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Abstract

A general multi-in multi-out joint detecting method which executed by the multi-in multi-out system of the receiver comprises the steps of: receiving the wireless signal from a transmitter; estimating the quality of the wireless signal transmission channel and sending a feedback information according to the estimated result to make the transmitter re-allocate a proper general multi-in multi-out structure for the transmission channel according to the feedback information; re-allocating a proper general joint detecting structure for the receiver; using the selected general joint detecting structure to process the wireless signal for the receiver.

Description

field of invention [0001] The present invention relates to a communication method and device, in particular to a general joint detection (GJD) method and device used in a multiple-input multiple-output (MIMO) wireless communication system. technical background [0002] In the process of wireless communication, when a signal propagates in a complex wireless channel, the same transmission signal will propagate along two or more paths and arrive at the receiver with a small time difference. The signals arriving through multiple propagation paths interfere with each other, causing the fading of the received signal, which is called multipath fading. [0003] The MIMO system uses multiple antennas or array antennas in the transmitter and receiver to send and receive data. Since multiple antennas have different fading characteristics at different spatial locations, as long as the distance between adjacent antennas used for transmitting and receiving signals in a MIMO system is lar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J99/00H04L1/00H04L1/06
CPCH04L1/0001H04L1/0656H04L1/065H04L1/0675H04L1/0625H04B7/0417H04L1/20
Inventor 邬钢李岳衡杜永刚
Owner KONINK PHILIPS ELECTRONICS NV