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Sorted QR decomposition method and MIMO detection method

A QR decomposition and MIMO-OFDM technology, applied in the field of MIMO detection based on sorting QR decomposition, can solve the problems of difficult performance guarantee and high complexity, and achieve the effects of low implementation complexity, excellent sorting performance and detection performance

Inactive Publication Date: 2007-05-23
PANASONIC CORP
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Problems solved by technology

[0032] (2) Insufficiency of the existing algorithm itself
In the traditional method, the existing algorithm is independently used for sorting QR decomposition on each subcarrier, but the existing algorithm still has the following shortcomings, that is, the complexity of using the high-performance optimal sorting algorithm is too high, while the low-complexity sub- When the optimal sorting method is used, the performance is difficult to guarantee

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  • Sorted QR decomposition method and MIMO detection method

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Embodiment Construction

[0050] The present invention will be described in detail below in terms of specific embodiments in conjunction with the accompanying drawings.

[0051] FIG. 5 is a schematic diagram of the sorting QR decomposition part according to an embodiment of the present invention.

[0052] As shown in FIG. 5 , the ranking QR decomposition part 201 of the present invention includes two subparts: a first ranking QR decomposition part 401 and a second ranking QR decomposition part 402 .

[0053] Specifically, firstly, the first sorting QR decomposition part 401 completes the sorting QR decomposition of a certain subcarrier. Any traditional sorting QR decomposition method can be used here.

[0054] Then, according to the result output by the first sorting QR decomposition part 401, the second sorting QR decomposition part 402 sequentially performs sorting QR decomposition based on the method of the present invention on adjacent subcarriers.

[0055] Fig. 6 is a flow chart of sorting QR de...

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Abstract

The invention relates to a sequence QR decompose method and MIMO checking method, wherein it comprises that: a, selecting one frequency unit form several frequency units, processing QR decompose on the channel characteristic matrix, to obtain relative Q matrix, R matrix and sequence, while said sequence is used as initial sequence of present frequency unit near the frequency unit; b, based on the diagonal amplitude of present R matrix, judging if present position and next position exchanged initial sequence can reduce code error transmission; c, if it can reduce the error code transmission, exchanging present position and next position, to obtain the sequence result; d, via said result, processing QR decompose on the channel characteristic matrix, to obtain Q and R matrixes. The invention has low complexity and better sequence property.

Description

technical field [0001] The present invention relates to the signal detection technology in the MIMO-OFDM system, in particular, to a low-complexity, high-performance sorting QR decomposition method and a MIMO detection method based on sorting QR decomposition, so as to improve the detection speed without reducing Detection accuracy. Background technique [0002] With the gradual integration of wireless networks and the Internet, people have higher and higher requirements on the type and quality of wireless communication services. In order to meet the requirements of wireless multimedia and high-speed data transmission, it is necessary to develop a new generation of wireless communication system. Among them, the MIMO-OFDM technology combining Multiple Antenna Input and Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) has attracted more and more people's attention. [0003] In the MIMO system, the transmitting end uses multiple antennas to transmit signals...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L1/06H04J99/00
CPCH04L27/2647H04L25/0208H04L2025/03426H04B7/0413H04L25/0204
Inventor 佘小明李继峰
Owner PANASONIC CORP
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