Programmable digital signal processor for spread spectrum communication and implementing method thereof

Abstract

The invention provides a digital signal processor of programmable spread spectrum communication. The processor simultaneously considers the signal processor structure of spread spectrum communication of software and hardware and can be applicable to various spread spectrum communication systems. The invention solves the problems that the specific integrated circuit chip has large area, poor flexibility and large chip cost caused by high requirements of 'software radio' to the general processor and the like, and simultaneously also solves the problem that the traditional baseband chip can only process one type of spread spectrum signals. The digital signal processor of programmable spread spectrum communication comprises a command resolution unit, at least one chip level programmable relevant arithmetic unit and a multifunctional programmable relevant arithmetic engine. The command resolution unit resolves spread spectrum signal processing instructions to obtain spread spectrum signal processing parameters; the at least one chip level programmable relevant arithmetic unit makes relevant operation of intermediate frequency data and local carriers according to the spread spectrum signal processing parameters; the relevant arithmetic data length is chip length of pseudo-random codes; the multifunctional programmable relevant arithmetic engine makes relevant operation of chip level relevant operation results and pseudo-random codes and obtains relevant arithmetic results based on the pseudo-random codes; and the multifunctional programmable relevant arithmetic engine also can carry out further signal processing to relevant arithmetic results based on the pseudo-random codes.

Description

technical field [0001] The present invention relates to spread spectrum signal processing, more specifically, the present invention relates to a programmable universal spread spectrum communication digital signal processor and its realization method. Background technique [0002] Spread spectrum communication, that is, spread spectrum communication technology (Spread Spectrum Communication), its basic feature is that the bandwidth of the signal used to transmit information is much larger than the bandwidth of the information itself. According to Shannon's formula, when the transmission rate of the signal is constant, the signal bandwidth and the SNR are interchangeable, that is, increasing the signal bandwidth can reduce the requirement for the SNR, and when the bandwidth increases to a certain extent, the SNR is allowed to further decrease , it is also possible that the useful signal power is close to the noise power or even submerged under the noise. Spread spectrum commu...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of large chip area and poor flexibility of ASIC chips, and to solve the problem that "software radio" has high requirements for general-purpose processors, resulting in high chip costs and solving the problem that traditional baseband chips can only process one kind of spread spectrum signal, the present invention proposes a At the same time, the spread spectrum communication signal processor architecture and its implementation method, which take into account both software and hardware, make a reasonable division of tasks handled by software and hardware, that is, functions that can be realized by software do not need to be realized by hardware, and hardware is only used for software. Tasks that cannot be done, such as tasks with very high real-time requirements, such as correlation calculations, etc., and the hardware is not limited to processing a kind of spread spectrum signal in design, that is to say, the signal processing performed by the hardware framework proposed by the present invention is large Part of the basic operation module that is indispensable for spread spectrum signal processing. In this way, the hardware part only handles the bottom-level operations, and the software can have higher flexibility. The hardware is controlled by a command analysis and data transmission unit configuration instruction of the present invention. transaction execution

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