ec8395 communication engineering important questions rejinpaul

UNIT V SPREAD SPECTRUM AND MULTIPLE ACCESS Measure of information – Entropy – Source coding theorem – Shannon–Fano coding, Huffman Coding, LZ Coding – Channel capacity – Shannon-Hartley law – Shannon's limit – Error control codes – Cyclic codes, Syndrome calculation – Convolution Coding, Sequential and Viterbi decoding Phase shift keying – BPSK, DPSK, QPSK – Principles of M-ary signaling M-ary PSK & QAM – Comparison, ISI – Pulse shaping – Duo binary encoding – Cosine filters – Eye pattern, equalizers UNIT III DIGITAL MODULATION AND TRANSMISSION Low pass sampling theorem – Quantization – PAM – Line coding – PCM, DPCM, DM, and ADPCM And ADM, Channel Vocoder - Time Division Multiplexing, Frequency Division Multiplexing If you require any other notes/study materials, you can comment in the below section.Amplitude Modulation – AM, DSBSC, SSBSC, VSB – PSD, modulators and demodulators – Angle modulation – PM and FM – PSD, modulators and demodulators – Superheterodyne receivers Interpret the mathematical expression for FM and PMĮC8395 CE All units Important Questions – Download Here Discuss the block diagram of a method for generating a narrow band FM.ġ7. Quote Carson’s rule to determine the bandwidth of FM.ġ6. Tell why frequency modulation is more preferred for voice transmission?ġ5. Show that Armstrong method is superior to reactance modulator.ġ4.

Define modulation index of frequency modulation and phase modulation.ġ3. Develop a modulation scheme for broadcast video transmission.ġ2. evaluate the total power in the modulated wave, if the carrier is 10 watts.ĩ. A carrier is amplitude modulated to a depth of 80%. Summarize the methods for generating SSB-SC signal.Ĩ. Transmission bandwidth if the modulation is AM.Ħ. When a signal m(t)=3cos(2?x103t) modulates a carrier c(t)=5cos(πx106t), assess the modulation index and

Can you formulate the theory for modulation index of an AM signal and write its classification.ĥ. Describe AM modulated wave for modulation index=0.5 and its spectra.Ĥ. Discover the need modulation in communication systems?ģ. Anna University Regulation 2017 EC8395 CE Important Questions with Answer Key and 3rd SEM EC8395 Communication Engineering Answer Key is listed down for students to make perfect utilization and score maximum marks with our study materials.ġ.

Ec8395 communication engineering important questions rejinpaul