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Method for simplifying signal processing of MIMO receiver

A signal processing and receiver technology, applied in the field of simplifying the signal processing of MIMO receivers, can solve the problems of difficult structure and engineering implementation, complex equalization algorithm, increased calculation amount, etc. Effect

Inactive Publication Date: 2017-12-08
成都亿凌特科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

Equalization technology is an effective technology to suppress coherent multipath and incoherent multipath, but it is difficult in structure and engineering implementation, the equalization algorithm is complex, and the amount of calculation increases sharply with the increase of the number of propagation paths. widely used in the system

Method used

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  • Method for simplifying signal processing of MIMO receiver
  • Method for simplifying signal processing of MIMO receiver
  • Method for simplifying signal processing of MIMO receiver

Examples

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Embodiment

[0018] Example: such as figure 2 As shown, a method for simplifying signal processing of a MIMO receiver includes the following steps:

[0019] Step 1: The sending end on the UE side transmits a sounding frame, and the NB side performs channel estimation after receiving the sounding frame to obtain a channel estimation matrix. If it is time-domain channel estimation, the channel estimation is represented by h; if it is a frequency-domain channel estimation matrix , the channel estimation is denoted by H;

[0020] There are multiple modulation systems under the MIMO structure, and the MIMO-OFDM system structure is taken as an example.

[0021] Suppose the system has N T transmitting antennas, N R receiving antennas, the serial information bit stream is decomposed into N T After data streams, independent mapping, coding, modulation, and finally from N T antennas simultaneously. Then the signal on the receiving antenna after modulation and wireless channel impulse response...

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Abstract

The invention discloses a method for simplifying signal processing of an MIMO receiver. The method includes steps of 1, a sending terminal of a UE side sends a detection frame, a NB side receives the detection frame and performs channel estimation and obtains a channel estimation matrix; 2, after the NB side obtains the channel estimation matrix, according to a receiving channel-sending channel reciprocity principle, simple conversion can be performed on the channel matrix and pre-coding treatment can be performed at the sending terminal; 3, after pre-coding treatment, the NB sending terminal signals goes to a receiving antenna of the UE through a wireless channel, namely, the signals received by the receiving terminal passes an all-through channel, multiple paths of one signal are converged to one antenna port in the same moment, so that an aim of suppression of multiple paths and signal energy convergence are achieved. According to the invention, through receiving-sending reciprocity and channel pre-coding treatment, multi-path effect is suppressed. The signals received by the receiving antenna are the gathering of original signals in space and time, so that extreme simplification of signal processing of the receiver is realized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for simplifying signal processing of a MIMO receiver. Background technique [0002] In the current wireless communication system, it is attracting attention to increase the transmission capacity in proportion to the number of transmission antennas by MIMO technology. Such as figure 1 shown, but there are also Inter-Symbol Interference (ISI for short) and Inter-Channel Interference (ICI for short) at the receiving end. In order to effectively use these interference signals and demodulate them correctly, the processing of MIMO technology Relatively complex, the receiving end has high requirements on the accuracy of channel estimation, and involves matrix operations and equalization algorithms, resulting in high processing complexity for MIMO receivers. [0003] MIMO technology mainly focuses on the following three areas: [0004] 1. Precoding technology n...

Claims

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Application Information

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IPC IPC(8): H04B7/0413H04B7/0456H04B7/08H04L25/03
CPCH04B7/0413H04B7/0456H04B7/08H04L25/03006
Inventor 王洁张清洪张建刚
Owner 成都亿凌特科技有限公司
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