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Decoding method of transformat combined indication

A transmission format combination and transmission format technology, which is applied in the field of transmission format combination instruction decoding, can solve the problems of not considering the search range, low performance and efficiency, etc., and achieve the effects of reducing the amount of calculation, improving performance, and narrowing the range

Active Publication Date: 2012-05-09
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0013] In order to solve the defect that the TFCI decoding method in the prior art has low decoding performance and efficiency due to lack of consideration of the search range, the present invention proposes a decoding method using the transmission format combination set table to indicate the transmission format combination

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  • Decoding method of transformat combined indication
  • Decoding method of transformat combined indication
  • Decoding method of transformat combined indication

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specific Embodiment 2

[0039] attached image 3 It is a flow chart of an embodiment of performing TFCI decoding on RM(32,10) codes by applying the method for decoding transport format combination indication of the present invention. It can be seen from the figure that when the TFCI is coded by RM(32,10), the method for decoding the transport format combination indication of the present invention mainly includes the following steps:

[0040] 1. After receiving 32bit TFCI coding, the information sequence R=(r 0 , r 1 , r 2 ,...,r m-1 ), since the TFCI encoding matrix given in 3GPP is not the standard RM code encoding matrix, in order to use the FHT algorithm to decode TFCI conveniently, it is necessary to transform the received bipolar sequence R in a certain order, that is, the 31st Columns are placed in column 1, followed by columns 1 to 15; column 32 is placed in column 17, followed by columns 16 to 30; the transformed sequence is U=(u 0 , u 1 , u 2 ,...,u m-1 );

[0041] 2. Since the RM(3...

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Abstract

To solve the deficiency of TFCI decoding method in prior art that the decoding performance and efficiency are relatively low due to the ignorance of searching scope, the invention proposes a decoding method that utilizes the table of transmission format combination set to indicate the transmission format combinations. The method makes full use of the maximum number of decimal TFCI values that canactually be sent found by searching the transmission format combination set table (TFCS table for short) and allows to search maximum values only in the matrix of hatta code alternations of the actually available TFCI values, thus reducing the scope of TFCI decoding and the amount of computation and enhancing the performance of decoding. Therefore, the transmission format combination directive decoding method offered by the invention has a series of advantages such as small computation amount, high efficiency and good performance.

Description

technical field [0001] The present invention relates to the decoding method of the transmission format combination indication in the time division multiplexing code division multiple access mobile communication system (abbreviated as TD-SCDMA system), especially relates to the transmission format combination using the transmission format combination set table in the TD-SCDMA system Indicates the method of decoding. Background technique [0002] In order to increase the data transmission rate of the TD-SCDMA system, the physical layer combines data received from one or more transport channels (abbreviated as TrCH) to form one or more coded combined transport channels (abbreviated as CCTrCH). Therefore, on each transport channel, there exists a transport format combination. The Transport Format Combination Indicator (TFCI for short) describes the transport format combinations of multiple TrCHs included in the current CCTrCH. The transmission format includes information such ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B7/216
Inventor 沈静李笑坡申敏郑建宏
Owner SPREADTRUM COMM (SHANGHAI) CO LTD