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Preprocessing-assisted signal detection method and device in multiple-input multiple-output system

A signal detection, multi-output technology, applied in the direction of error detection/prevention using signal quality detector, error prevention/detection through diversity reception, etc. problems such as the reach rate, to achieve the effect of avoiding the reach rate and taking into account the effectiveness

Active Publication Date: 2017-12-26
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0032] The embodiment of the present application provides a preprocessing-assisted signal detection method in a multiple-input multiple-output system to solve the problem in the prior art that using LRA detection for signals cannot achieve the optimal achievable rate
[0033] The embodiment of the present application also provides a preprocessing-assisted signal detection device in a multiple-input multiple-output system to solve the problem in the prior art that using LRA detection for signals cannot achieve the optimal achievable rate

Method used

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Embodiment 1

[0048] In order to solve the problem in the prior art that using LRA detection for signals cannot achieve the optimal reachable rate and optimal reachable rate, Embodiment 1 of the present application provides a preprocessing-assisted signal detection method in a multiple-input multiple-output system . The specific implementation flow chart of this method is as follows: image 3 As shown, it mainly includes the following steps:

[0049] Step 31: Select a complex integer matrix from the set of complex integer matrices according to parameter values ​​related to the validity of data transmission.

[0050]Wherein, the above-mentioned parameter value related to the effectiveness of data transmission may be, but not limited to, the achievable rate at the receiving end of data streams transmitted by different transmitting antennas.

[0051] The set of complex integer matrices described above is composed of complex integer matrices obtained by decomposing the channel matrix.

[005...

Embodiment 2

[0113] Embodiment 2 provides a signal detection device assisted by preprocessing in a multiple-input multiple-output system, which is used to solve the problem in the prior art that LRA detection for signals cannot achieve an optimal attainable rate. The specific structure diagram of the signal detection device is as follows: Figure 4 As shown, a matrix selection unit 41 and a transmission signal determination unit 42 are included. The specific introduction of these two functional units is as follows:

[0114] The matrix selection unit 41 is configured to select a complex integer matrix from the set of complex integer matrices according to parameter values ​​related to the validity of data transmission. Wherein, the set of complex integer matrices is composed of complex integer matrices obtained by decomposing the channel matrix.

[0115] The sending signal determining unit 42 is configured to determine the estimated value of the transmitted data stream according to the rec...

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Abstract

Disclosed is a preprocessing-aided signal detection method in a multiple input multiple output (MIMO) system, for solving the problem in the prior art of incapability of reaching an optimal achievable rate by employing LRA detection of signals, the method comprising: selecting a complex integer matrix from a complex integer matrix set according to parameter values relevant to the validity of data transmission; and according to a received signal, a detection matrix and the selected complex integer matrix, determining the estimation value of a transmitted data stream. Also disclosed is a preprocessing-aided signal detection device in the MIMO system.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a preprocessing-assisted signal detection method and device in a multiple-input multiple-output system. Background technique [0002] The multiple input multiple output (Multiple Input Multiple Output, MIMO) technology has become a commonly used technology in the fourth generation mobile communication because it can bring diversity gain and spatial multiplexing gain at the same time. [0003] figure 1 A schematic diagram of MIMO technology is shown. The sender goes through N t root transmit antenna, the data stream will After being transmitted through the space channel, the N at the receiving end r (N t ≤N r ) root receiving antenna to receive. [0004] On the receiving end, each receive antenna receives a data stream from each transmit antenna. If a received signal y is used to represent the signals received by all receiving antennas (the signals ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/20H04L1/06
CPCH04L1/06
Inventor 赵慧李文芳赵龙郑侃
Owner BEIJING UNIV OF POSTS & TELECOMM
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