TAILIEUCHUNG - DCStradeoff

The Nyquist theoretical minimum bandwidth requirement. The ShannonHartley capacity theorem (and the Shannon limit) Government regulations. Technological limitations. Other system requirements ( satellite orbits) | : Modulation and Coding Tradeoff and Digital Communications Design Goals in designing a DCS Goals: Maximizing the transmission bit rate Minimizing probability of bit error Minimizing the required power Minimizing required system bandwidth Maximizing system utilization Minimize system complexity Error probability plane (example for coherent MPSK and MFSK) Bit error probability M-PSK M-FSK k=1,2 k=3 k=4 k=5 k=5 k=4 k=2 k=1 bandwidth-efficient power-efficient Design on the Error probability plane Bit error probability M-PSK M-FSK k=1,2 k=3 k=4 k=5 k=5 k=4 k=2 k=1 bandwidth-efficient power-efficient Selection of parameters - M in MP vs. MF - Eb/No for Pb requirement Limitations in designing a DCS Limitations: The Nyquist theoretical minimum bandwidth requirement The Shannon-Hartley capacity theorem (and the Shannon limit) Government regulations Technological limitations Other system requirements ( satellite orbits) Nyquist minimum bandwidth requirement The .

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