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CP-EBPSK communication system for pseudorandom sequence phase modulation and communication method thereof

A technology of CP-EBPSK and pseudo-random sequence, which is applied in the field of communication system of extended binary phase shift keying, and can solve the problem that the power spectrum sideband cannot be reached.

Active Publication Date: 2012-10-17
苏州东奇信息科技股份有限公司
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Problems solved by technology

On the other hand, it is not difficult to see that figure 1 (b) When Δ=0.1, the reason why the power spectrum sidebands of the CP-EBPSK signal modulated by the pseudo-random sequence phase can not meet the stricter requirement of less than -60dB is mainly because the PSD sidebands contain more High discrete spectral (i.e. line spectrum) components

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  • CP-EBPSK communication system for pseudorandom sequence phase modulation and communication method thereof
  • CP-EBPSK communication system for pseudorandom sequence phase modulation and communication method thereof
  • CP-EBPSK communication system for pseudorandom sequence phase modulation and communication method thereof

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Embodiment Construction

[0049] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0050] A CP-EBPSK communication system of pseudo-random sequence phase modulation, based on the binary phase-shift keying modulation mode of continuous phase expansion, the expression of the binary phase-shift keying modulation mode is as formula (1),

[0051] the s 0 (t)=sinω c t, 0≤t

[0052] s 1 ( t ) = sin ( ω c t - Δ sin ω c t ) , ...

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Abstract

The invention discloses a continue phase-extended binary phase shift keying (CP-EBPSK) communication system for pseudorandom sequence phase modulation and a communication method thereof. On the basis of a CP-EBPSK modulation mode, the CP-EBPSK communication system comprises a CP-EBPSK modulator of pseudorandom sequence phase modulation and a CP-EBPSK demodulator of pseudorandom sequence phase modulation. According to the CP-EBPSK modulator of pseudorandom sequence phase modulation, a pseudorandom sequence generator is added to an original CP-EBPSK modulator and the pseudo random number generated by the pseudorandom sequence generator is utilized to randomly select a symbol of the delta. And the CP-EBPSK demodulator of pseudorandom sequence phase modulation includes an impulse filter that is used for highlighting phase modulation information of a received signal and eliminating the polarity changes, so that the demodulation performance is not influenced by pseudorandom sequence modulation. According to the invention, advantages of narrow bandwidth occupied by the modulation signal, low interference, simple realization, wide code rate adaptive range and flexible application.

Description

technical field [0001] The invention belongs to the technical field of digital information transmission with high frequency spectrum utilization rate, relates to information modulation and demodulation in digital communication, and specifically relates to a kind of extended binary phase shift keying (CP-EBPSK) of pseudo-random sequence phase modulation Communication Systems. Background technique [0002] The rapidly growing demand for broadband wireless services puts forward higher and higher requirements for wireless communication, which directly leads to more and more crowded radio frequencies in the air, especially with the third generation (3G) and fourth generation (4G) broadband mobile With the development of communication networks, the contiguous spectrum of lower frequency bands is almost exhausted. The auction price for the right to use 10MHz spectrum for 20 years in Europe has reached 4 billion euros. In my country, it is difficult to buy the most favorable freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/20H04L27/22
Inventor 吴乐南应鹏魁冯熳张宇
Owner 苏州东奇信息科技股份有限公司
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