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Areas
Wireless Communication Systems and Networks
Applications of trellis-coded
modulation to mobile radio; investigation of acquisition requirements for
mobile direct-sequence spread
spectrum radio systems; capacity of CDMA and other mobile spread-spectrum
radio systems and networks; interconnection with wide area networks;
multimedia communications
Packet Radio Network Protocols
Design and analysis of protocols for packet radio networks;
adaptive routing, forwarding, and retransmission techniques; survivable
radio networks; protocols for spread-spectrum packet radio networks;
ARQ and hybrid ARQ schemes for data transmission; simulation of
packet radio networks to determine throughput, delay, and other
performance parameters for different signaling schemes and network
protocols; evaluation of network performance in adapting to changes
in traffic, interference, and topology; use of side information
in network protocols
Modulation, Coding, and
Receiver Processing for Fading Channels
Characterization of fading
channels; waveform design for frequency-selective fading channels; use of
coding and coded modulation to combat
fading and interference in both wideband and bandlimited channels;
diversity transmission and diversity combining schemes; receiver
processing techniques including the use of rake receivers; applications
to HF, VHF, and UHF mobile radio communications
Spread-Spectrum Communication
Systems
Synchronization methods for direct-sequence and frequency-hop
communication systems; signal analysis and sequence design for
spread-spectrum communications; increased anti-jam and multiple-access
capabilities for frequency-hop spread-spectrum signaling; development
and use of side information to enhance demodulation and decoding
in spread-spectrum receivers; development of computer software
to assist in the analysis of the effects of linear filtering and
channel distortion on the performance of direct-sequence spread
spectrum; CDMA mobile cellular communications
Theory and Applications of Error-Control Codes
Use of advanced error-control coding techniques to provide
interference protection and efficient operation of communication
systems; adaptive methods in error-control coding; applications
of coding theory to the design of sequences with good correlation
properties; design of efficient decoding algorithms for error-control
codes; applications of error-control coding in digital communication
systems and wireless information networks
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