Channel interleaving method and system in hand TV system

Abstract

This invention provides a channel interlacing method and a system in a handheld TV system, in which, the method includes: A, carrying out LDPC coding to input signal source bit streams to output LDPC coding blocks, B, carrying out bit interlacing among the blocks of LDPC, C, carrying out constellation mapping to the interlaced bits to generate constellation points, D, interlacing and mapping the points onto a time frequency plane of a multi-frame including multiple data frames to get an even better time diversity result , at the same time, bit information in a LDPC coding block can be scattered to irrelated data subcarriers by interlacing among LDPC coding blocks and interlaced mapping of constellation and different modulation steps can be processed together.

Description

technical field [0001] The invention belongs to the field of handheld television, in particular to a channel interleaving method and system in a handheld television system. Background technique [0002] Handheld TV is to watch TV programs through mobile terminals, that is, to realize streaming media and other data services through mobile networks, which can greatly enrich people's daily life and information exchange. Mobile terminals include various handheld terminals such as vehicle-mounted devices and notebook computers. [0003] At present, there are mainly three types of network systems for realizing handheld TV services: [0004] (1) Based on traditional mobile communication networks, such as Code Division Multiple Access (CDMA), GSM Evolution Enhanced Data Rates (Enhanced Data rates for GSM Evolution, EDGE), General Packet Radio Service (General Packet Radio Service, GPRS ) and other unicast systems; [0005] (2) Unicast or broadcast systems based on satellite syste...

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