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Single carrier frequency domain equalization frame structure aiming at short-wave communication channel

A single-carrier frequency-domain, short-wave communication technology, applied in communication between multiple stations, multi-frequency code system, shaping network in transmitter/receiver, etc., can solve the problem of poor resistance to frequency selective fading in parallel systems, Issues such as high equalization complexity in the serial system achieve the effects of strong anti-frequency selective fading ability, reduced equalization complexity, and high transmission rate

Inactive Publication Date: 2010-07-14
北京韦加航通科技有限责任公司
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Problems solved by technology

[0011] The present invention provides a single-carrier frequency-domain equalization frame structure for short-wave communication channels to solve the problems in the prior art that the parallel system has poor resistance to frequency selective fading and the serial system has high equalization complexity.

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  • Single carrier frequency domain equalization frame structure aiming at short-wave communication channel
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  • Single carrier frequency domain equalization frame structure aiming at short-wave communication channel

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] The invention proposes a data frame structure and a technical solution suitable for short-wave communication based on single-carrier frequency domain equalization (SC-FDE) technology. Single-carrier frequency domain equalization system is a very effective method against multipath interference in broadband wireless transmission. Compared with the parallel system, the peak-to-average ratio is low, and the ability to resist frequency selective fading is strong. Under the same conditions, a higher transmission rate and a lower bit error rate can be achieved; compared with the general serial system, the complexity is also greatly reduced, and for higher transfer rates.

[0028] The SC-FDE ...

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Abstract

The invention discloses a single carrier frequency domain equalization frame structure aiming at a short-wave communication channel. The frame structure comprises a frame header and a plurality of time slots, wherein each time slot further includes a front guide block and a plurality of packets. The single carrier frequency domain equalization frame structure aiming at the short-wave communication channel utilizes adaptive frequency domain equalization for carrying out equalization treatment and achieves excellent equalization effect; and furthermore, along with the increment of multipath time delay spread, the equalization complexity is greatly reduced compared with time domain equalization. Compared with a parallel system, the single carrier frequency domain equalization frame structure has low peak-to-average ratio (PAR), strong frequency selective fading resisting capability as well as higher transmission speed and lower bit error rate (BER) under the same condition.

Description

technical field [0001] The present invention relates to the technical field of short-wave communication, in particular to a single carrier frequency domain equalization (Single Carrier Frequency Domain Equalization, SC-FDE) frame structure for short-wave communication channels. Background technique [0002] According to the division of CCIR (Consultative Committee of International Radio), short-wave refers to electromagnetic waves with a wavelength of 100m-10m (frequency 3MHz-30MHz). Radio communication using short waves is called short wave communication. [0003] The actual frequency range of shortwave communication is 1.5MHz~30MHz, and the available frequency range is only 28.5MHz. According to international regulations, each shortwave station occupies a frequency width of 3.7kHz, and the communication space is very crowded, which limits communication to a large extent. capacity and data transfer rate. [0004] Short-wave communication all adopts the form of sky-wave tr...

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Application Information

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IPC IPC(8): H04L25/03H04L27/26H04B7/26H04L1/06
Inventor 吴南润沈文刚方光青
Owner 北京韦加航通科技有限责任公司
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