Signal processing method, and receiving equipment as well as sending equipment thereof

A technology of sending equipment and receiving equipment, which is applied in the field of mobile communication, can solve the problems that the performance is difficult to achieve closed-loop processing performance, the amount of feedback is large, and the amount of feedback is large, so as to achieve the effect of no quantization loss, improve system performance, and reduce feedback amount

Active Publication Date: 2012-11-21
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: the first prior art belongs to open-loop processing, and it is difficult to achieve the performance of closed-loop processing; the second prior art requires the receiving device to feed back complete and accurate CSI, However, the amount of CSI feedback is usually large and there is a quantization loss. Therefore, although the closed-loop processing in the prior art 2 can improve system performance, the required feedback amount is too large and there is a quantization loss.

Method used

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  • Signal processing method, and receiving equipment as well as sending equipment thereof
  • Signal processing method, and receiving equipment as well as sending equipment thereof
  • Signal processing method, and receiving equipment as well as sending equipment thereof

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Embodiment Construction

[0032] figure 1 It is a schematic flow diagram of the method of the first embodiment of the present invention, including:

[0033] Step 11: The receiving device obtains the channel matrix H.

[0034] Specifically, the receiving device may obtain the channel matrix H by using methods such as channel estimation.

[0035] Step 12: The receiving device obtains an integer matrix T according to the channel matrix.

[0036] An integer matrix is ​​a matrix whose elements are all integers.

[0037] Specifically, the integer matrix T can be obtained by using the LR method.

[0038] Here is a brief introduction to the LR method:

[0039] A grid (Lattice) is an arbitrary integer linear combination of a set of vectors, denoted as:

[0040] L ( G ) = { Σ i = 1 n x i g...

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Abstract

The present invention discloses a signal processing method, and receiving equipment as well as sending equipment thereof. The method comprises: the receiving equipment obtains a channel matrix, obtains an integer matrix according to the channel matrix, and feeds the integer matrix or the transformation matrix of the integer matrix back to the sending equipment to enable the sending equipment to precode the data signals to be sent according to the integer matrix or the transformation matrix of the integer matrix. The embodiment of the present invention can realize a better system performance with fewer feedback quantities.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a signal processing method, a receiving device and a sending device. Background technique [0002] Multiple Input Multiple Output (MIMO) technology has become a key technology in mobile communication. It increases the spatial freedom without increasing the bandwidth, so that by multiplexing multiple data streams in the spatial dimension, linear The transmission rate of the wireless communication system is greatly increased, which can meet the requirements of high-speed data transmission services. Two basic problems need to be solved in the MIMO system: eliminating the interference between the data streams and equalizing the performance difference between the data streams. Applying the Lattice Reduction (LR) method can solve the above two problems at the same time. [0003] The first prior art is to use the LR method in the receiving device, and the general process is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04B7/26
Inventor 刘锋王艺沈晖李斌
Owner HUAWEI TECH CO LTD
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