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

A technology for transmitting equipment and receiving equipment, applied in the field of mobile communication, can solve the problems of difficult to achieve closed-loop processing performance, large feedback amount, quantization loss, etc., and achieve the effect of no quantization loss, improving system performance, and reducing feedback amount.

Active Publication Date: 2011-04-20
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 flowchart of the method according to 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 use methods such as channel estimation to obtain the channel matrix H.

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

[0036] An integer matrix refers to a matrix whose elements are all integers.

[0037] Specifically, the LR method can be used to obtain the integer matrix T.

[0038] The following briefly introduces the LR method:

[0039] Lattice is an arbitrary linear combination of integers of a set of vectors, denoted as:

[0040] L ( G ) = { X i = 1 n x i g i } = { Gx } ,

[0041] among them, Is a vector of n arbitrary integer elements,

[0042] G=[g 1 g 2 Λ g n ] Is n m-dimensional vectors Matrix, g i Is an m-dimensional column ve...

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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, receiving equipment and sending equipment. Background technique [0002] Multiple Input Multiple Output (MIMO) technology has become a key technology in mobile communications. It increases the degree of 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 increased to meet the requirements of high-rate data transmission services. Two basic problems need to be solved in the MIMO system: eliminating interference between data streams and equalizing performance differences between data streams. The Lattice Reduction (LR) method can solve the above two problems at the same time. [0003] The first of the prior art is to use the LR method in the receiving device. The general process is as follows: the receiving device ...

Claims

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Application Information

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Patent Type & Authority Applications(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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