Now showing items 1-10 of 77
Survivability stategies in all optical networks.Survivability stategies in all optical networks.
Recent advances in fiber optics technology have enabled extremely high-speed transport of different forms of data, on multiple wavelengths of an optical fiber, using Dense Wavelength Division Multiplexing (DWDM). It has ...
Wavelet based image compression integrating error protection via arithmetic coding with forbidden symbol and map metric sequential decoding with ARQ retransmission
The phenomenal growth of digital multimedia applications has forced the communications
Repeat-punctured turbo trellis-coded modulation.
Ever since the proposal of turbo code in 1993, there has been extensive research carried out to improve both the performance and spectrum efficiency. One of the methods used to improve the spectrum efficiency was to ...
Channel estimation for SISO and MIMO OFDM communications systems.
Telecommunications in the current information age is increasingly relying on the wireless link. This is because wireless communication has made possible a variety of services ranging from voice to data and now to multimedia. ...
Repeat-punctured turbo coded cooperation.
Transmit diversity usually employs multiple antennas at the transmitter. However, many wireless devices such as mobile cellphones, Personal Digital Assistants (PDAs), just to name a few, are limited by size, hardware ...
Effect of amplifier non-linearity on the performance of CDMA communication systems in a Rayleigh fading environment
The effect of amplifier non-linearity on the performance of a CDMA communications system
Hybrid media streaming architecture, focussing on quantification of scalability of media streaming architectures, including streaming protocal evaluation.
An analysis of media streaming architectures is performed in this dissertation drawing focus to the advantages and disadvantages of the various architectures. Detailed examination is given to scalability of decentralized ...
Semi-blind channel estimation for multiuser OFDM-IDMA systems.
Over the last decade, the data rate and spectral efficiency of wireless mobile communications have been significantly enhanced. OFDM technology has been used in the development of advanced systems such as 3GPP LTE and ...
Cross-layer design for multimedia applications in cognitive radio networks.
The exponential growth in wireless services and the current trend of development in wireless communication technologies have resulted into an overcrowded radio spectrum band in such a way that it can no longer meet the ...
Signal space diversity with and without Alamouti transmit diversity using generalised selection combining.
The first contribution is based on M-ary quadrature amplitude modulation (M-QAM) constellations with signal space diversity (SSD) using a single transmit and receive antenna system in the presence of Rayleigh fading. Two ...