EC-802 (B) RGPV B.Tech

Wireless Communication (WC)

Previous year papers and the official syllabus are free to read, no account needed.

Previous Year Papers

4 papers, latest May 2026

Free

Topics as the official RGPV syllabus lists them.

Unit 1 Introduction 3

Applications and requirements of wireless services – history, service types, performance requirements, economic and social aspects.
Technical challenges in wireless communications – multipath propagation, spectrum scarcity, limited energy, user mobility, noise and interference‑limited environments.
Propagation mechanisms – free‑space loss, reflection and transmission, diffraction, scattering by rough surfaces, and wave guiding.

Unit 1 notes

Unit 2 Wireless Propagation Channels 2

Statistical description of the wireless channel – time‑invariant and time‑variant two‑path models, small‑scale fading (with/without dominant component), Doppler spectra, temporal fading dependence, and large‑scale fading.
Wideband and directional channel characteristics – delay dispersion causes, system‑theoretic description of wireless channels, WSSUS model, condensed parameters, ultra‑wideband channels, and directional descriptions.

Unit 2 notes

Unit 3 Channel Models 3

Channel models – narrowband, wideband and directional models; deterministic channel‑modeling methods.
Channel sounding – introduction, time‑domain measurements, frequency‑domain analysis, modified measurement techniques, and directionally resolved measurements.
Antennas – fundamentals, antennas for mobile stations, and antennas for base stations.

Unit 3 notes

Unit 4 Transceivers and Signal Processing 3

Structure of a wireless communication link – transceiver block diagram and simplified models.
Modulation formats and demodulation architectures.
Error probability analysis in additive white Gaussian noise (\(\text{AWGN}\)) channels, flat‑fading channels, and delay/frequency‑dispersive fading channels.

Unit 4 notes

Unit 5 Diversity 2

Diversity techniques – introduction, micro‑diversity, macro‑diversity, simulcast, signal combination, error probability with diversity reception, and transmit diversity.
Equalization methods – introduction, linear equalizers, decision‑feedback equalizers, maximum‑likelihood sequence estimation (Viterbi detector), comparative analysis of equalizer structures, fractional‑spaced equalizers, and blind equalizers.

Unit 5 notes

Counted from 4 past EC-802 (B) papers.

Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.

Discuss the history and evolution of wireless communication from early systems to 1G-5G and the technical and economic requirements driving development

Asked 3 times: 2026, 2025, 2024
Define diversity in wireless communication, differentiate between microdiversity and macrodiversity (including simulcast), and explain how diversity improves reliability and signal reception.

Asked 3 times: 2026, 2025, 2022
Explain the different types of wireless services and their technical, economic and social requirements and impact

Asked 3 times: 2025, 2022