多媒體通訊系統中可重組化運算技術之研究─子計畫四：可重組化通訊運算引擎的設計與實現(2/3)
Date Issued
2004
Date
2004
Author(s)
DOI
922215E002020
Abstract
With the advent of the 2G/2.5G/3G high-speed telecommunication, the communication
system of multi-standard / multi-mode and the multi-mode in single standard has become a trend
as to offer a variety of communication services. In the 1st year of this project, we have finished
the following three Reconfigurable Communication Engines (RCE), which are common in
communication systems, Viterbi decoder, Reed Solomon encoder/decoder, and Fast Fourier
Transform (FFT) processor. This year we integrate these three RCEs into a multimode
communication system.
The chosen standard, Digital Video Broadcasting-Terrestrial (DVB-T), is the next
generation of digital television, which is the future trend of video. DVB-T adopts Coded
Orthogonal Frequency Division Multiplexing (COFDM) technology. FFT processor used for
demodulation has 2k and 8k mode. Forward Error Correction (FEC) adopts Viterbi decoder and
Reed Solomon decoder to be inner decoder and outer decoder. Viterbi decoder with generation
polynomial (171, 133)oct support 5 kinds of code rate, 1/2、2/3、3/4、5/6 and 7/8. And RS(204, 188,
t = 8) Reed Solomon code is adopted.
We use Simulink to build up each module for system integration. First floating point
simulation is performed for functional verification and then fixed point simulation for hardware wordlength optimization. Configure the RCE and integrate with the other necessary modules like
deinterleaver and FEQ. Verify the system with pattern generated by Simulink. By utilizing RCE
which meets various communication standards, we can reuse modules and build up
communication systems fast.
Subjects
Reconfigurable
Reconfigurable Communication Engine
DVB-T
Publisher
臺北市：國立臺灣大學電子工程學研究所
Type
report
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