Group 58 Michael Bieniek, Mikhail Zakharov, Consultant: Dr. Vincent Gaudet
Vast majority of consumer media content is stored digitally on computers. Consumers would like to see their media content on a TV.
TechnologyProsCons WireCheapNot always feasible Wi-Fi based Exiting infrastructure ‘Smart’ TVs QoS Cost Setup Custom Transmitter & Receiver QoS Cost Setup
Every TV has a wireless tuner to receive broadcast TV Not all channels occupied by stations FCC regulation allows for licence-free low power broadcast within the UHF band
Investigate feasibility of building a low-power portable transmitter, operating within the UHF band. Living room equivalent of FM transmitters for listening to music in the car
Minimize hardware costs Scalability: point to multipoint Utilize existing infrastructure Ease of setup
Wirelessly broadcast audio and video. Receive on a TV. Tune to a UHF channel.
CriteriaDigital (ATSC)Analog (NTSC + BTSC) High DefinitionYesNo QoSBetterAverage Existing infrastructureAverageBetter Implementation complexity HighMedium CostHighLow
Support commonly used digital media storage formats (H.264, MPEG 2, MPEG 4, etc…). USB for power and PC interfacing. Portable form-factor ready. Reference: Dell Unveiled USB Digital TV Tuner [online], Available: gizmo.com/tag/digital-tv-tuner/
Ref: Beagleboard.org
Input: NTSC video and BTSC audio. Output: UHF modulated signal. Freescale MC44BS373CA. ◦ Capable of modulating on channels ( MHz – MHz).
Input: 2-channel analog audio. Output: Stereo encoded audio. Freescale MC44C402.
Filter ResponseImplementation
Two stage amplifier boosts the power level of the RF modulated signal. Total simulated gain of 44 dB ◦ High IP3 points and unconditionally stable. Mini-Circuits RF Amplifier
Spectrum Analyzer Output Parameters Power (dBm) Actual-11 Simulated10 Maximum (FCC)17
Use digital modulation techniques (ATSC). Improve output power. Minimize size. $38/unit. Reference: Dell Unveiled USB Digital TV Tuner [online], Available: gizmo.com/tag/digital-tv-tuner/