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PSK-based close-range wireless network using CDMA technology

A phase-shift keying and wireless network technology, applied in the field of communication, can solve the problem of high cost, and achieve the effect of low cost, strong anti-fading ability, and good autocorrelation

Active Publication Date: 2019-01-15
东台城东科技创业园管理有限公司
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AI Technical Summary

Problems solved by technology

If CDMA technology can be applied to short-distance communication, it will be able to meet the above-mentioned communication requirements very well. Therefore, transforming wireless networks with 3G technology has become one of the current research hotspots. However, the difficulty lies in directly applying 3G technology to wireless networks. The cost of networking is too high

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  • PSK-based close-range wireless network using CDMA technology
  • PSK-based close-range wireless network using CDMA technology
  • PSK-based close-range wireless network using CDMA technology

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Embodiment Construction

[0042] The present invention proposes a short-distance wireless network using CDMA technology based on phase-shift keying technology (BPSK), specifically as follows.

[0043] In the quasi-synchronous CDMA communication system, there is no need for very strict synchronization between the system base station and each mobile user, so the realization is simple. In view of the characteristics of the system, the requirement for the adopted spread spectrum address code group is to have ideal correlation characteristics within the range of synchronization error. Therefore, a quasi-synchronous CDMA system with excellent anti-multiple access interference performance can be realized only by looking for a group of sequences with ideal correlation characteristics near zero time delay as the spread spectrum address code, and the zero-correlation zone (ZCZ) sequence is suitable for This need.

[0044] The so-called zero-correlation zone sequence means that there is a region of a specific le...

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Abstract

A PSK(phase shift keying )-based close-range wireless network using CDMA technology is provided. In a quasi-synchronous CDMA communication system, a zero-correlation region sequence is used as a spread spectrum address code to realize a quasi-synchronous CDMA system with superior anti-multi-access interference performance. The quasi-synchronous delay is controlled within 1 bit. The system uses binary phase shift keying (BPSK) as a modulation and demodulation mode. The zero-correlation sequence has an ideal correlation characteristic within a zero-correlation window near the zero delay, can minimize or even eliminate multi-access interference in a wireless communication system. The communication network of the invention has good robustness and an anti-fading capability, is simple in systemimplementation, and has a cost much lower than that of the CDMA technology of a 3G mobile network, and is beneficial to implementation.

Description

technical field [0001] The invention belongs to the technical field of communication, and designs a method for realizing a short-distance wireless network, which is a short-distance wireless network based on phase-shift keying technology and adopting CDMA technology. technical background [0002] The ever-increasing demand for diverse applications in the field of communication puts forward higher requirements on the performance of communication networks. The future short-distance wireless communication network will provide a more ubiquitous wireless connection, which requires the communication system not only to have stable and uninterrupted signal transmission capabilities in any complex communication environment, but also to be able to operate in multiple access, Real-time access, spectrum efficiency, transmission rate, reliability and other aspects have more outstanding performance. The growth of high-speed and large-capacity multimedia services including video communica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/00H04B1/7103H04B1/7073H04B5/00
CPCH04B1/7073H04B1/7103H04B5/00H04J13/0055
Inventor 黄金城张雅恒曹瑞
Owner 东台城东科技创业园管理有限公司
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