Method and device for multi-antenna signal processing of uplink system

A signal processing device and signal processing technology, applied in diversity/multi-antenna systems, multi-frequency code systems, space transmit diversity, etc., can solve the problems of precoding performance loss and overall system transmission performance degradation, and achieve the guarantee of transmission performance Effect

Inactive Publication Date: 2015-07-22
GLOBAL INNOVATION AGGREGATORS LLC
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Problems solved by technology

In order to ensure that the transmitted signal has a low PAPR, when designing the codebook of the precoding matrix, it is necessary to consider the factors of PAPR. For the design of the codebook, there is an additional constraint, which will inevitably affect the performance of the precoding. loss, which eventually leads to the decline of the overall transmission performance of the system

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  • Method and device for multi-antenna signal processing of uplink system
  • Method and device for multi-antenna signal processing of uplink system
  • Method and device for multi-antenna signal processing of uplink system

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Embodiment Construction

[0046] Figure 5 It is a flow chart of the method for processing multi-antenna numbers in the uplink system of the present invention, such as Figure 5 shown, including:

[0047] Step 500: Encode the uplink signal of the terminal to generate codewords, and modulate each codeword respectively.

[0048] The specific implementation of this step belongs to the prior art and will not be repeated here.

[0049] Step 501: After mapping codewords to layers on the modulated data, perform precoding processing in the time domain to obtain data sent on each antenna.

[0050] The mapping of codewords to layers in this step belongs to the prior art and will not be repeated here.

[0051] This step emphasizes that the precoding process is performed in the time domain, and the specific implementation of precoding belongs to the usual technical means of those skilled in the art, and will not be described in detail here, that is to say, the specific implementation method of precoding does no...

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Abstract

The invention provides a method and a device for a multi-antenna signal processing of an uplink system. The method and the device achieve the precoding treatment for uplink signals in a time domain so as to ensure that the time-frequency conversion with low PAPR of a sending signal is performed after the precoding, so when a codebook of a precoding matrix is designed, the factors of the PAPR are unnecessary to be considered. Compared with the prior art, the design of the codebook removes one constraint condition to ensure that the performance of the precoding has no loss and further ensure the overall transmission performance of the system.

Description

technical field [0001] The present invention relates to multiple input multiple output (MIMO, Multiple Input Multiple Output) technology, in particular to a signal processing method and device for multiple antennas in an uplink system. Background technique [0002] In wireless communication, if multiple antennas are used to transmit and receive at both the sending end and the receiving end, then spatial multiplexing technology can be used to obtain a higher data rate, that is, the same time-frequency resource is used at the transmitting end to send multiple data streams , and the channel coefficient matrix can be obtained through channel estimation at the receiving end, and then the data on each data stream can be demodulated. [0003] The precoding (Precoding) technology is a technology for preprocessing a signal at a transmitting end by using Channel State Information (CSI, Channel Status Information) to improve the performance of a multi-antenna system. figure 1 It is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04L27/26H04L1/06
Inventor 王瑜新郝鹏
Owner GLOBAL INNOVATION AGGREGATORS LLC
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