Channel frequency generation method and device and channel evaluation circuit

A channel frequency and channel technology, applied in the field of wireless communication, can solve the problems of inability to real-time, unavailable, and inability to determine whether the channel is available, etc., to reduce interference, improve real-time and precision, and improve performance and the quality of transmitted signals.

Active Publication Date: 2018-05-04
CHINA ACAD OF TELECOMM TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0016] The present invention provides a channel frequency generation method, device and channel evaluation circuit to solve the problem that only a fixed channel can be selected but cannot be judged whether the channel is available when a certain s

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  • Channel frequency generation method and device and channel evaluation circuit
  • Channel frequency generation method and device and channel evaluation circuit
  • Channel frequency generation method and device and channel evaluation circuit

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Embodiment Construction

[0055] The inventor noticed during the invention that:

[0056] Bluetooth wireless technology uses frequency hopping to spread the spectrum. The frequency hopping method requires the transmitter to hop the signal from one frequency to another with a specific hopping sequence corresponding to the pseudo-random code sequence. The pseudo-random sequence controls the transmitter's frequency synthesizer and frequency-hopping frequency converter through the pseudo-random code generator to select the frequency-hopping sequence of the signal.

[0057] figure 1 It is a working diagram of the frequency hopping system. As shown in the figure, the basic composition of the frequency hopping system is shown in the figure. In addition, in the figure, the transmitting end is simplified as modulation and frequency hopping, and the receiving end is simplified as despreading and dehopping. It includes two identical pseudo-random code generators at the sending end and the receiving end. In the...

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Abstract

The invention discloses a channel frequency generation method and device and a channel evaluation circuit. The method includes the following steps: generating a channel frequency for next transmissionat a frequency hopping sequence generation module according to an input parameter and a basic frequency hopping sequence; determining whether the channel frequency is available according to channel quality evaluation through an AFH channel mapping module, and when available, outputting the first channel frequency as a channel sequence of an RF module; and when not available, generating a channelfrequency for the next transmission at the AFH channel mapping module according to the input parameter and the basic frequency hopping sequence, and when the generated channel frequency indicates an available channel, outputting the channel frequency as the channel sequence of the RF module. By adopting the scheme of the invention, the process of transmitting data by using an interference channelcan be avoided, the performance of a transmitter and the quality of a transmitted signal can be improved, and the interference of the channel with the transmitted signal can be reduced; and further, ascheme implemented by a hardware circuit is also provided, and the quality of communication transmission can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for generating channel frequency and a channel evaluation circuit. Background technique [0002] With the rapid development of VLSI (Very Large Scale Integration, very large scale integration) and DSP (Digital Signal Processing, digital signal processing) technologies, many communication systems adopt digital modulation technologies. Early first-generation communication systems used analog modulation techniques. Digital modulation has many advantages over analog modulation. Digital modulation has better fidelity (high fidelity). Digital modulation system uses digital signal processing technology to make the communication quality higher and the function stronger. Moreover, the security is better, and the digital signal can be encrypted, which can prevent the communication signal from being stolen by others. [0003] Digital modulation, also kn...

Claims

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Application Information

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IPC IPC(8): H04L25/02H04B1/713H04B1/7136H04B1/715
CPCH04B1/713H04B1/7136H04B1/715H04L25/0202
Inventor 王廷楷
Owner CHINA ACAD OF TELECOMM TECH
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