Method and device for generating frame synchronization sequence in digital communication system

Abstract

The invention relates to a method and a device for generating a frame synchronization sequence in a digital communication system and belongs to the technical field of digital signal transmission. In order to improve the flexibility, effectiveness and reliability of signal transmission, the invention provides a method for generating the frame synchronization sequence, which comprises the following steps: according to a frame structure, generating a plurality of original sequences; distributing signal messages to each original sequence; modulating the original sequences to carry the signal messages to form a plurality of modulation sequences; combining the modulation sequences in a time domain to form the frame synchronization sequence; and sending a frame after the frame synchronization sequence is combined with data to be transmitted into the frame. For the frame synchronization sequence provided based on the technical scheme, a receiving end can simply and rapidly complete the capture of the frame synchronization sequence and the estimation of a received signal synchronization parameter, and completes the modulation and restoration of the signal message. The method has simple realization process, low complexity and high detection precision and can reliably restore the signal messages under a complex wireless transmission channel environment.

Description

technical field

[0001] The invention belongs to the technical field of digital signal transmission, and in particular relates to a method and a device for generating a frame synchronization sequence in a digital communication system. Background technique

[0002] The current wireless communication technology mainly solves the problem of how to reliably increase the transmission rate within a limited bandwidth, including two main block transmission technologies: OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and SC-FDE (Single- Carrier Frequency Domain Equalization, single carrier frequency domain equalization). The existing technology can realize high-speed transmission in frequency selective fading channels, and the realization process is relatively simple, and has been widely used in wireless communication systems such as wireless local area networks, fixed wireless access, and terrestrial digital broadcasting.

[0003] Broad...

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