A baseband data transmission apparatus and frame synchronization method thereof

A baseband data and transmission device technology, applied in the direction of synchronization/start-stop system, synchronization signal speed/phase control, etc., can solve the problems of high cost of frame synchronization, large bandwidth occupied by synchronization, low transmission rate, etc., and achieve the effect of small bandwidth

Inactive Publication Date: 2005-01-26
晋江市高新技术开发办公室
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a device for baseband data transmission and a frame synchronization method, which overcomes the shortcomings of high-speed baseband data trans

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  • A baseband data transmission apparatus and frame synchronization method thereof
  • A baseband data transmission apparatus and frame synchronization method thereof
  • A baseband data transmission apparatus and frame synchronization method thereof

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0044] As shown in Fig. 6, a kind of baseband data transmission device of the present invention includes framer 10, serializer 20, deserializer 30, deframer 40, and physical connection between said serializer 20 and deserializer Low-voltage high-speed differential line 50 between 30 and synchronous frame insertion controller 60 . The framer 10 forms N bit parallel user data into user data frames of equal length, and at the same time, the synchronization frame insertion controller 60 periodically inserts a synchronization frame at an idle frame position, and the user data frame is framed with the synchronization frame Into the N Bit parallel data stream input to the serializer. The serializer 20 converts the framed parallel data stream into serial data after encoding (mainly adding clock information), and converts it into a differential signal through...

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Abstract

The invention relates to a base band data transmission installation and its frame synchronization method. It includes framing machine, serializer, deserialiser, deframing machine, synchronizing frame inserting controller. The serializer and the deserialiser are physically connected by low pressure high speed differential line. The framing machine is used to form the user data to user data frame with the same length. Meanwhile, the synchronizing frame inserting controller inserted synchronizing frame to free frame position periodically, the user data frame and the synchronizing frame are formed to parallel data. The serializer transforms the parallel data after framing to serial data by coding, and transforms to differential signal and transmits out by the low pressure high speed differential line. After the deserialiser transforms the received differential signal to single end signal, the serial data will be transformed to parallel data. The deframing machine finds the frame boundary according to the frame synchronization information contained in the received parallel data, then, each of the received frame data will be distributed to the after stage unit to use. The advantage of the installation and method of the invention is that the band width took up is small, the transmission efficiency is high, and the cost of the frame synchronization is reduced.

Description

technical field [0001] The invention relates to a baseband data transmission device and a transmission method thereof, in particular to a TD-SCDMA base station internal baseband data transmission device and a frame synchronous transmission method thereof. Background technique [0002] The base station transceiver used in the wireless communication system can generally be divided into two functional units: a radio frequency transceiver unit 2 (RFU) and a baseband processing unit 3 (BPU). The schematic diagram is shown in Figure 1. These two units 2, 3 need to carry out data transmission: the BPU sends the downlink baseband digital I / Q and data 32 (24) to the signaling unit 22 of the RFU, and the signaling unit 22 performs quadrature modulation, digital-to-analog conversion, Mixing, filtering and amplification, and other processing, and finally the output radio frequency signal is sent out through the antenna; the receiving unit 21 of the RFU performs down-filtering, amplifica...

Claims

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Application Information

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IPC IPC(8): H04L7/04H04L25/40
Inventor 王志刚赖峥嵘
Owner 晋江市高新技术开发办公室
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