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Decoder realizes - en.51rd.net highly effective based on DSP processor’s UMTS Turbo the MAP
Wednesday, October 7th, 2009 at 00:31 | No commentsCategories: DSPShort Content: The Turbo code has been published since 1993, by its splendid performance, has aroused the widespread interest in the industry and the scientific research domain. The Turbo code performance approaches (signal-to-noise ratio difference is 0.7dB or smaller) by Claude E. the Shannon definite channel allowance. Berrou, Glavieux and Thitimajshima proposed the first Turbo code, its structure is composed of two parallel cascade convolution encoder. The Turbo code code scheme produces identical information sequence two to interweave differently the form component ... -
Carries on HDTV based on 8 micro controller control hard disk the symbol stream read-write
Thursday, November 27th, 2008 at 10:59 | No commentsCategories: SCMShort Content: Abstract: The introduction carries on HDTV symbol stream deposit Gao with the C8051F015 micro controller control hard disk Qing symbol stream playbacking machine the hardware design and the software programming. This system takes decoder's front end, may realize HDTV symbol stream at the right moment playbacking. Key word: HDTV symbol stream ATA/ATAPI-4 standard LBA pattern CPLD Along with HDTV in global starting as well as digital technique day by day mature, the sound/video frequency product digitization, the high definition has ... -
Based on CPLD convolution code codec encoder-decoder’s design
Wednesday, October 29th, 2008 at 20:17 | No commentsCategories: EDA/PLDShort Content: The abstract convolution code is one performance fine error control coding. This article elaborated the convolution code codec encoder-decoder's key job principle, in the MAX PLUS2 software platform, gave the use complex programmable logic component design (2,1,6) to convolute the code codec encoder-decoder electric circuit, and has carried on the translation and the profile simulation. After the synthesis, downloads to complex programmable logical component EPM7128SLC84-15, the test result indicated that has achieved the anticipated design requirements. Key word convolution ... -
Realizes many machine and the mouth line correspondence with MC145026/27
Monday, October 27th, 2008 at 09:23 | No commentsCategories: Communication NetworksShort Content: Abstract: Introduced one kind arranges decoding chip MC145026/27 with the three states of matter to realize and realizes the method based on and the mouth multi-equipment and lines communications system's composition principle, has given between many miniature machine's wireless communication question solution and so on, elaborated system's main assembly and the means of communication.Key word: Parallel interface wireless communication encoder decoder MC145026/27 1 introduction In domains and so on telemetering, remote control, often uses the microcomputer and the monolithic integrated ... -
In DVB-S2 BCH decoder’s hardware design
Thursday, September 25th, 2008 at 07:10 | No commentsCategories: EDA/PLDShort Content: 1 introduction Second generation of digit satellite broadcast standard DVB-S2 since issue continuously widely-noted, he used the forward-acting error correction which the code and the LDPC encoding cascade became by BCH outside to code the (FEC) system, reduced the system demodulation threshold effectively, might approach Shannon nearly to limit, in addition also used many kinds of had the high frequency band use factor modulation system, sharpened the channel through-put capacity large scale. In the DVB-S2 technology's breakthrough expanded his application ... -
Based on FPGA MPEG-4 codec encoder-decoder - 51RD Chinese electronic net
Saturday, September 6th, 2008 at 02:02 | No commentsCategories: EDA/PLDShort Content: Whether you once did want to use the advanced video compression technology in yours FPGA design, actually discovered that realizes extremely complex? Now you do not need into a video frequency expert to be able to use the video compression in yours system. The match spirit thinks of the MPEG-4 encoder/decoder endorse which promotes newly to help you to meet the video compression need. The video frequency and the multimedia systems become day by day complex, therefore whether ...
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