Signal processing method and device

A signal and input signal technology, applied in the field of signal processing methods and devices, can solve the problems of OFDM symbol fading, constrained matrix is ​​not suitable for OFDM symbols, etc., and achieve the effect of reducing the impact of transmission

Active Publication Date: 2018-06-05
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] In order to solve the problem that the transmission of OFDM symbols is affected by frequency selective fading, and the constraint matrix obtained according to the channel characteristics of flat fading is not suitable for OFDM symbols, the embodiment of the present invention provides a signal processing method and device

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Embodiment Construction

[0061] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0062] Please refer to figure 1 , which shows a structural frame diagram of a signal processing device provided by an embodiment of the present invention. The signal processing device includes:

[0063] A signal acquisition module 110, configured to set each sampling point signal on the OFDM symbol, and acquire an input signal;

[0064] For each OFDM symbol, the transmitting end samples the OFDM symbol according to a preset sampling period to obtain each sampling point. In this embodiment, the sending end also needs to initialize each sampling point, that is, set the time-domain signal of each sampling point to 0 to obtain the sampling point signal.

[0065] The sending end can also acquire the input modulation symbols, and determin...

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Abstract

The invention discloses a signal processing method and device, belonging to the technical field of communication. The device includes: a signal acquisition module, a matrix calculation module and a signal calculation module. The method includes: setting each sampling point signal on the orthogonal frequency division multiplexing OFDM symbol, and acquiring an input signal; calculating a constraint matrix according to channel characteristics of frequency selective fading; according to the sampling point signal, the input signal and the The constraint matrix computes the output signal. The device includes: a signal acquisition module, a matrix calculation module and a signal calculation module. The invention solves the problem that the transmission of OFDM symbols is affected by frequency selective fading, the constraint matrix obtained according to the channel characteristics of flat fading is not suitable for OFDM symbols, and achieves the effect of reducing the influence of frequency selective fading on the transmission of OFDM symbols.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a signal processing method and device. Background technique [0002] The MIMO (Multiple-Input Multiple-Output) system is a system that allows multiple antennas to transmit and receive signals at the same time. Since there are more antennas in the MIMO system, the antennas in the MIMO system use smaller power amplifiers , has been widely used today with higher and higher requirements for energy-saving indicators. When using the MIMO system to transmit signals, the transmitting end needs to preprocess the input signal to reduce the influence of multipath fading on the signal. Among them, multipath fading refers to the phenomenon that the signal is affected by the ground and atmospheric refraction during transmission and reaches the receiving end through multiple different paths, including flat fading and frequency selective fading. A channel with flat fading has ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L1/00H04L5/00
CPCH04L25/022H04L25/0242H04L25/03343H04L27/2626H04L27/2623Y02D30/70H04J11/0023H04L27/2688H04L47/29H04W16/22H04W88/02H04W88/08
Inventor 杭海存吴晔
Owner HUAWEI TECH CO LTD
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