Method for matching between element sequence and subcarrier in TD-SCDMA system

A technology of TD-SCDMA and matching method, which is applied in the field of matching between chip sequences and subcarriers in TD-SCDMA system, can solve the problems of rate matching, etc., and achieve the effect of eliminating ISI, ensuring consistency and improving performance

Inactive Publication Date: 2006-08-30
上海贝豪通讯电子有限公司
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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a matching method between chip sequences and subcarriers in a TD-SCDMA system compatible with OFDM technology, so as to solve the rate matching problem that occurs in the process of converting TD-SCDMA symbols into OFDM symbol modulation

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  • Method for matching between element sequence and subcarrier in TD-SCDMA system
  • Method for matching between element sequence and subcarrier in TD-SCDMA system
  • Method for matching between element sequence and subcarrier in TD-SCDMA system

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Embodiment Construction

[0032] In the TD-SCDMA system, in order to ensure the reliable transmission of data on the wireless link, the physical layer first needs to encode / multiplex the data stream from the MAC, and then after physical channel mapping, the data on the channel will be spread and scrambling. Spread spectrum multiplies the channel data with a digital sequence higher than the bit rate of the data, and the multiplied result expands the bandwidth of the signal, converting the bit rate data stream into a chip rate data stream. Spread spectrum processing is usually also called channelization operation, and the digital sequence used is called channelization code, which is a group of code groups whose lengths can be different but still mutually orthogonal. The scrambling code is similar to the spread spectrum, which also uses a digital sequence to multiply the data after the spread spectrum processing. Different from the spread spectrum, the digital sequence used for the scrambling code has th...

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Abstract

This invention relates to a matching method for a code plate sequence and a sub-carrier in the TD-SCDMA system for the compatible OFDM technology, which gets relative transmission rate based on the occupied code channel number in the TD-SCDMA system, then, computes the transmission rate of OFDM symbols when applying different sub-carrier number and circular prefixes to acquire the OFDM symbol number necessary applied for matching their data rates or the Additive number invert each time of the TD-SCDMA to get the correct match relation.

Description

【Technical field】 [0001] The invention relates to the technical field of communication, in particular to a method for matching chip sequences and subcarriers in a TD-SCDMA system compatible with Orthogonal Frequency Division Multiplexing (OFDM) technology. 【Background technique】 [0002] The TD-SCDMA standard proposal was adopted by ITU as one of the four standards of the third generation mobile communication, which is a major breakthrough in China's mobile communication field. The air interface technology it adopts is one of the most advanced transmission technologies. TDD-like standard proposals can be easily integrated into various advanced technologies, such as smart antenna technology, synchronous CDMA technology and software radio technology, while avoiding frequency division Disputes over many patents in the field of CDMA technology in duplex (FDD). Compared with other third-generation mobile communication standards, TD-SCDMA technology has more advantages. [0003]...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/02H04L5/02H04B7/26H04L27/36H04L27/26
Inventor 蔡凌云
Owner 上海贝豪通讯电子有限公司
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