Method and system for generating channel impulse response
A channel impulse response, frequency domain technology, applied in the field of communications, can solve problems such as large computational complexity, and achieve the effects of reducing computational complexity, implementation complexity, and computational complexity
Active Publication Date: 2019-06-14
LEADCORE TECH
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[0015] The purpose of the present invention is to provide a channel impulse response generation method and system to solve the problem of high computational complexity of existing channel impulse response calculations
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[0048] The method and system for generating the channel impulse response proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0049] Please refer to Figure 4 , the present invention provides a channel impulse response generation method and system, the channel impulse response generation system includes an original channel impulse response generation module, a frequency domain Wiener filter module, a time domain filter module and a channel impulse response generation module, the above modules pass The following steps ultimately generate the channel impulse res...
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The invention provides a channel impact response generation method. The method comprises the steps of: receiving a signal of a pilot frequency location, and obtaining an original channel impact response based on least square channel estimation, wherein the original channel impact response is composed of an antenna number, a port number and a symbol number; performing frequency domain wiener filtering on the original channel impact response, generating frequency domain wiener filtering results on a symbol where the pilot frequency location is arranged, and storing half of the frequency domain wiener filtering results; obtaining a time domain filtering coefficient, selecting an effective frequency domain wiener filtering result, performing time domain filtering according to the effective frequency domain wiener filtering result and the time domain filtering coefficient, and inserting a value equal to the last time domain filtering result; and performing frequency domain interpolation on the time domain filtering result to generate all channel impact responses.
Description
technical field [0001] The present invention relates to the technical field of communications, in particular to a method and system for generating channel impulse responses. Background technique [0002] In wireless communication systems based on Orthogonal Frequency Division Multiplexing (OFDM) technology, such as LTE / WiMax, Wiener filtering and its variants are widely used in the calculation of channel impulse response. Due to the large amount of data to be processed and complex calculations, higher requirements are placed on the receiver, especially the processing capability of the receiver using software defined radio (SDR) technology. [0003] Such as Figure 1-3 As shown, taking the 20MHz full bandwidth of the 3GPP LTE protocol, a single port (port 0) for transmission, and dual antennas (antenna 0 and antenna 1) for reception, a 2x1D Wiener filter channel estimation impulse response calculation method is as follows: [0004] 1) The receiver receives the signal at the ...
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IPC IPC(8): H04L27/26H04L25/02
Inventor 林立
Owner LEADCORE TECH