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Implementation of CMMB System using Software Defined Radio (SDR) Platform
Linköping University, Department of Electrical Engineering, Computer Engineering.
Linköping University, Department of Electrical Engineering, Computer Engineering.
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Abstract [en]

CMMB (China Multimedia Mobile Broadingcasting) is a wireless broadcastingchannel standard for low bandwidth, low cost hand-held digital TV is adopted byall continental Chinese government TV broadcasting companies and some HongKong private TV broadcasting companies. The business potential is high, yet thefuture is hard to predict because it might be replaced by GB200600 or DTMB. Thedigital modulation is based on OFDM with pilot supporting channel estimationand equalization and CP supporting multi-path induced ISI problems.This thesis investigates the implement a CMMB system using a SDR platform.Simulation chain was implemented using MATLAB with full data precision includingCMMB transmitter and receiver. The transmitter behavior model includes RSencoder, LDPC encoder, OFDM modulation, etc. The receiver behavior modelincludes OFDM demodulation, channel estimation, channel equalization, LDPCdecoder, RS decoder, etc. Different channel models emulating pathloss, whitenoise, multi-path, and glitch were modeled. Based on the simulation chain andchannel models, T-domain, F-domain channel estimator and equalizer were implemented,optimized. Optimized TD-FD models for different mobility scenarioswere proposed. The focus of the thesis is on 2D (FD-TD) channel estimation andequalization.

Place, publisher, year, edition, pages
2010. , 63 p.
Keyword [en]
CMMB, OFDM, SDR, wireless, digital broadcasting
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-57310ISRN: LiTH-ISY-EX--10/4305--SEOAI: diva2:324868
2010-06-09, glashuset, 10:15 (English)
Available from: 2010-06-22 Created: 2010-06-16 Last updated: 2011-05-18Bibliographically approved

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Gu, HaohaoZhang, He
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