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Telecommunication system transceiver in transform domain and its realization

A communication system and transceiver technology, applied in the field of transform domain communication system transceivers, can solve the problems of increasing equipment cost, time consumption, and increasing the total misjudgment probability of the receiving end, etc., achieving simple implementation, easy channel estimation, and improved search speed Effect

Inactive Publication Date: 2007-06-20
UNIV OF ELECTRONIC SCI & TECH OF CHINA +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Here, a global search needs to be performed when making a decision, and the global search is a time-consuming process, and the global search will search for elements that are not modulated by CCSK. When these elements are strongly interfered, there will be misjudgment, which increases the rece

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  • Telecommunication system transceiver in transform domain and its realization
  • Telecommunication system transceiver in transform domain and its realization
  • Telecommunication system transceiver in transform domain and its realization

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[0068] The core idea of ​​the present invention is: after the tDCS transmitter modulates the data to be sent in the frequency domain, the modulated data signal is transmitted via the OFDM transmitter; the tDCS receiver receives the data signal via the OFDM receiver and obtains the tDCS through demodulation The data sent by the transmitter.

[0069] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0070] Before introducing the scheme of the present invention, a brief introduction to the existing Orthogonal Frequency Division Multiplexing (OFDM) technology will be given first. OFDM divides high-speed serial data into multiple low-speed parallel data and modulates different carrier frequencies respectively. At the same time, cyclic prefixes are added at the transmitting end and cyclic prefixes are...

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Abstract

The invention discloses a transceiver that can change domain communication system and its implementation method, the transform domain communication system transceiver of the invention after modulating the data to be sent in frequency domain transmit the modulated data signals through orthogonal frequency division multiplexing transceiver; TDCS receiver receives data signals through OFDM receiver, and acquire data sent by TDCS transceiver through demodulation. The program of the invention simply achieves the TDCS transceiver; improves the anti-jamming ability of equipment, reduces the cost of the equipment at the same time.

Description

technical field [0001] The present invention relates to a transform domain communication system (TDCS, Transform Domain Communication System), in particular to a transform domain communication system transceiver and its implementation method. Background technique [0002] The basic idea of ​​TDCS is to avoid the interference of existing users on the transmitted signal by dynamically changing the spectrum of the transmitted signal within a given spectrum range, and to avoid the interference of the transmitted signal to existing users. [0003] Usually, in the TDCS transmitter, the modulation uses CCSK (Cyclic CodeShift Keying), and CCSK is an M-ary modulation manner. The simplest implementation of CCSK modulation is to first select a base function (Base Function) b(t), then perform a cyclic shift on the base function according to the data to be sent, and finally send the cyclically shifted base function. [0004] Fig. 1 is a block diagram of the composition of the TDCS trans...

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Application Information

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IPC IPC(8): H04L27/26
Inventor 韩川王军李少谦陈荣标李云岗王吉滨
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA