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Frame synchronizing signal design technique for burst communication

A frame synchronization signal and signal design technology, applied in the electronic field, can solve the problems that synchronization information cannot be used in data packets, phase-locked loop technology is difficult to directly apply to burst communication systems, and signal levels and noise statistical characteristics are different.

Inactive Publication Date: 2010-09-29
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] 2. The signal level and noise statistical characteristics of the data packets received by the receiving end may be different, so the synchronization information obtained by a data packet before demodulation cannot be used for demodulating the next data packet
The phase-locked loop technology widely used in continuous communication system is difficult to be directly applied to burst communication system
[0007] 4. From the perspective of the application and implementation of burst mode transmission technology, its difficulty is prominently reflected in the rapid capture of synchronization parameters

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  • Frame synchronizing signal design technique for burst communication
  • Frame synchronizing signal design technique for burst communication
  • Frame synchronizing signal design technique for burst communication

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Embodiment Construction

[0058] The frame synchronous signal design structure that the present invention proposes is: adopt following a kind of 48-bit synchronous sequence as the basic unit of signal construction, and this 48-bit synchronous sequence is:

[0059] 1111 1111 0111 1010 0101 1100 1100 1010 0010 1100 0000 0000

[0060] For the burst communication system based on sequence correlation, the 48-bit sequence is used to concatenate to form a synchronous signal, but it is not directly concatenated with multiple 48-bit sequences. The synchronous signal design proposed by the present invention is to use a 13-bit Barker sequence as The parent sequence, each bit of the Barker sequence is expanded to 48 bits, and the expansion method is: the corresponding bit of the Barker sequence is "1", and the corresponding 48-bit sequence remains unchanged; if the corresponding bit is "0", the corresponding The 48-bit sequence is flipped as a whole ("1" flips to "0", "0" flips to "1").

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Abstract

The invention discloses a new frame synchronizing signal design and a corresponding frame synchronizing mechanism. A corresponding number of 48-bit sequences the master code of which is a barker code, are connected in parallel to constitute a frame synchronizing signal. The synchronizing signal has a good peak value and low side lobes. A quadratic capture idea is used in the signal design. The new designed signal can realize signal capture and communication maintenance; and a burst communication system adopting the synchronizing mechanism has the characteristics of low system complexity, better system code error rate and the like.

Description

technical field [0001] The invention belongs to the field of electronic technology, such as wireless communication, mobile communication, radar, electronic countermeasures, etc., and particularly relates to a wireless mobile communication system for burst communication. Background technique [0002] Many communication systems are in a state of continuous operation. Once established, the signal will continue to occur. This type of system has no strict requirements on the response time of the receiving end to capture the signal, but in some communication systems, the signal occurs intermittently or even in bursts. The most typical is the multi-access system, where a single user can be modeled as a burst source with random arrival and random length with certain parameters. The characteristics of this user source information are obviously different from the traditional continuous and steady source. It requires the burstiness of transmission, that is, the transmission is initiat...

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Application Information

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IPC IPC(8): H04L27/26
Inventor 周亮文红易智
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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