Browsing by Advisor "Takawira, Fambirai."
Now showing items 1-20 of 41
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Adaptive multiple symbol decision feedback for non-coherent detection.
(2006)Non-coherent detection is a simple form of signal detection and demodulation for digital communications. The main drawback of this detection method is the performance penalty incurred, since the channel state information ... -
Analysis of the EDF family of schedulers.
(2009)Modern telecommunications companies are moving away from conventional circuit-switched architectures to more versatile packet-switched infrastructures. Traditional First-In-FirstOut (FIFO) queues that are currently ... -
Call admission control for interactive multimedia satellite networks.
(2015)Satellite communication has become an integral component of global access communication network due mainly to its ubiquitous coverage, large bandwidth and ability to support for large numbers of users over fixed and mobile ... -
Capture effects in spread-aloha packet protocols.
(2005)Research in the field of random access protocols for narrow-band systems started as early as the 1970s with the introduction of the ALOHA protocol. From the research done in slotted narrow-band systems, it is well known ... -
Combined turbo coding and interference rejection for DS-CDMA.
(2004)This dissertation presents interference cancellation techniques for both the Forward Error Correction (FEC) coded and the uncoded Direct Sequence Code Division Multiple Access (DS-CDMA) systems. Analytical models are ... -
Concatenated space-time codes in Rayleigh fading channels.
(2002)The rapid growth of wireless subscribers and services as well as the increased use of internet services, suggest that wireless internet access will increase rapidly over the next few years. This will require the ... -
Cooperative diversity techniques for future wireless communications systems.
(2013)Multiple-input multiple-output (MIMO) systems have been extensively studied in the past decade. The attractiveness of MIMO systems is due to the fact that they drastically reduce the deleterious e ects of multipath fading ... -
Design of a medium access protocol and scheduling algorithm for multimedia traffic over a DVB-RCS satellite link using a cross-layer approach.
(2010)Satellite networks provide an alternative to terrestrial networks where cost and lack of infrastructure are driving parameters. For a satellite network to be cost effective one needs to be able to increase the efficiency ... -
Downlink call admission control in mixed service CDMA cellular networks.
(2007)Since the ascendance of CDMA (Code Division Multiple Access) as the generally accepted multiple access technology of choice for next generation networks, the rate of development of the wireless cellular communication ... -
Energy efficient distributed receiver based cooperative medium access control protocol for wireless sensor networks.
(2013)Wireless sensor networks are battery operated computing and sensing devices that collaborate to achieve a common goal for a specific application. They are formed by a cluster of sensor nodes where each sensor node is ... -
Energy efficient medium access protocol for DS-CDMA based wireless sesor networks.
(2012)Wireless Sensor Networks (WSN), a new class of devices, has the potential to revolutionize the capturing, processing, and communication of critical data at low cost. Sensor networks consist of small, low-power, and ... -
The hybrid list decoding and Chase-like algorithm of Reed-Solomon codes.
(2005)Reed-Solomon (RS) codes are powerful error-correcting codes that can be found in a wide variety of digital communications and digital data-storage systems. Classical hard decoder of RS code can correct t = (dmin -1) /2 ... -
Hybrid token-CDMA MAC protocol for wireless networks.
(2009)Ad hoc networks are commonly known to implement IEEE 802.11 standard as their medium access control (MAC) protocol. It is well known that token passing MAC schemes outperform carrier-sense-multiple-access (CSMA) schemes, ... -
Iterative graphical algorithms for phase noise channels.
(2020)This thesis proposes algorithms based on graphical models to detect signals and charac- terise the performance of communication systems in the presence of Wiener phase noise. The algorithms exploit properties of phase ... -
Lattice-structure based adaptive MMSE detectors for DS-CDMA systems.
(2001)There has been significant interest in the research community on detectors for DS-CDMA systems. The conventional detector, which detects users ' data bits, by using a filter matched to the users' spreading codes, has two ... -
A MAC protocol for IP-based CDMA wireless networks.
(2005)The evolution of the intemet protocol (IP) to offer quality of service (QoS) makes it a suitable core network protocol for next generation networks (NGN). The QoS features incorporated to IP will enable future lP-based ... -
A MAC protocol for wireless networks with QoS guarantees.
(2002)Mobile communications are becoming integrated into society at an explosive rate. While 2nd generation (2G) systems limit the user to basic services such as voice and low-bit rate data, 3G networks are characterized by ... -
Multiple antenna systems : channel capacity and low-density parity-check codes.
(2005)The demand for high data rate wireless communication systems is evident today as indicated by the rapid growth in wireless subscribers and services. High data rate systems are bandwidth intensive but bandwidth is an expensive ... -
Multiuser demodulation for DS-CDMA systems in fading channels.
(2000)The problems of optimal as well as suboptimal detection for CDMA transmissions over an additive white Gaussian noise (AWGN) channel, have been the focus of study in the recent past. However, CDMA transmissions are ...