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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 Team 2 Architecture Review R95922110 陳其蔚 B92902006 杜承翰
Revised Architecture The FIR raised cosine filter is removed. (Why?)
ISI and Dispersion Interference
Remove the Filter • Original architecture has impulse generators • Inter-symbol Interference (ISI) due to dispersion • No need to be considered in digital circuit
QASK Map • Rectangular QASK • Odd-bit Symmetric QASK • Gray Code
QASK Map (continued) • Another Odd-bit QASK from IEEE 802.15 proposal
QASK Map (continued) • Hybrid • Difficult modulation
Bit Error Rate and Power Consumption • What’s the difference between 16QAM, 32QAM, 64QAM, …? • Our method
Tunable QAM • Difficulty • Solution
Schedule • Finished • Rectangular 16QAM subsystem • Relating knowledge collected and realized • Following task • Other type of QAM map • Modulator I/O • C model of demodulator
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