WCSN (B-TECH Electronics and Communication Engineering 7-8th)

Introduction: Mobile Radio Systems around the world, Examples of Wireless

Communication Systems; Paging Systems, Cordless Telephone Systems, Cellular

Telephone Systems, Comparison of common Wireless Communication systems

Digital Communication through fading multipath channels: Fading channel and

their characterstics- Channel modelling, Digital signalling over a frequency non selective

slowly fading channel- frequency selective slowly fading channel- Calculation of error

probabilities- Tapped Delay line model- The RAKE demodulator- performance-Concept

of diversity branches and signal paths- Combining methods- Selective diversity

combining-pre-detection and post-detection combining- Switched combining- maximal

ratio combining- Equal gain combining.

Multiple Access Techniques for Wireless Communications: Introduction, Frequency

Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Spread

Spectrum Multiple Access, Space Division Multiple Access, Packet Radio Protocols;

Pure ALOHA, Sloted ALLOHA, Capacity of Cellular Systems

Wireless Networking: Introduction, Difference between Wireless & Fixed Telephone

Networks, Development of Wireless Networks, Traffic Routing in Wireless Networks,

Wireless Data Services, Common Channel signaling, Broad band ISDN & ATM,

Signaling System No. 7(SS-7), Personal Communication Services/ Networks, Protocols

for Network Access, Network Databases.

Wireless Systems & Standards: AMPS and ETACS, United states digital cellular (IS54

& IS 136), Global system for Mobile (GSM); Services, Features, System Architecture,

and Channel Types, Frame Structure for GSM, Speech Processing in GSM, CDMA

Digital standard (IS 95); Frquency and Channel specifications, Forward CDMA Channel,

Reverse CDMA Channel, CT2 Standard for Cordless Telephones, Personal Access

Communication System, Pacific Digital Cellular, Personal Handyphone Systems, PCS

and ISM Bands, Wireless Cable Television.

Wireless Local Area Networks (WLAN): Components and working of WLAN,

transmission media for WLAN, Modulation techniques for WLAN (DSSS, FHSS), IEEE

802.11 standards and protocols for WLAN (MACA, MACAW). Mobile Network and

Transport layer: Mobile IP, Mobile TCP, traffic routing in wireless networks, wire less

ATM. Wireless Local Loop(WLL) : WLL Architecture, WLL Technologies and frequency

spectrum.

Future trends: Blue Tooth technology, 4G mobile techniques, Wi-Fi Technology.