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Digital Intellectual Property Final Project Presentation

Digital Intellectual Property Final Project Presentation. Team 2 Architecture Review R95922110 陳其蔚 B92902006 杜承翰. Original Architecture. Revised Architecture. The FIR raised cosine filter is removed. (Why?). ISI and Dispersion. Interference. Remove the Filter.

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Digital Intellectual Property Final Project Presentation

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  1. Digital Intellectual Property Final Project Presentation Team 2 Architecture Review R95922110 陳其蔚 B92902006 杜承翰

  2. Original Architecture

  3. Revised Architecture The FIR raised cosine filter is removed. (Why?)

  4. ISI and Dispersion Interference

  5. Remove the Filter • Original architecture has impulse generators • Inter-symbol Interference (ISI) due to dispersion • No need to be considered in digital circuit

  6. QASK Map • Rectangular QASK • Odd-bit Symmetric QASK • Gray Code

  7. QASK Map (continued) • Another Odd-bit QASK from IEEE 802.15 proposal

  8. QASK Map (continued) • Hybrid • Difficult modulation

  9. Bit Error Rate and Power Consumption • What’s the difference between 16QAM, 32QAM, 64QAM, …? • Our method

  10. Tunable QAM • Difficulty • Solution

  11. Schedule • Finished • Rectangular 16QAM subsystem • Relating knowledge collected and realized • Following task • Other type of QAM map • Modulator I/O • C model of demodulator

  12. Reference • “Odd-Bit Quadrature Amplitude-Shift Keying” by JOEL G. SMITH, MEMBER, IEEE • “Reasons to Use Non-squared QAM Constellations With Independent I & Q In PAN Systems” (http://www.vocal.com) by Victor Demjanenko Ph. D., Paul Marzec MS, and Alberto Torres Ph.D. • “HIGHER-ORDER BLIND SIGNAL FEATURE SEPARATION: AN ENABLING TECHNOLOGY FOR BATTLEFIELD AWARENESS” by Wei Su* and John A. Kosinski, U.S. Army CERDEC, Ft Monmouth, NJ 07703 • Signals and Systems, 1997, 2nd Ed. by Oppenheim and Willsky, Prentice Hall • Communication Systems, 4th Edition, Simon Haykin

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