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A performance-enhanced two-transmit antenna spatial modulation (SM) technique is introduced and analysed. Specifically, this paper modifies the conventional spatial modulation technique by utilising simultaneous transmission from both antennas to improve the diversity aspect and hence the system performance. A unique symbol to antenna assignment to enable the receiver to distinguish between the different...
In this paper we study the performance of orthogonal poly-phase (OPP) sequences on the uplink of asynchronous code division multiple access (CDMA) systems. We explore the application of dynamic code allocation (DCA) of OPP sequences with the objective to minimize multiple access interference (MAI), arising due to the asynchronous transmission, and enhance the system's overall performance. Two DCA...
High peak to average power ratio (PAPR) is a serious drawback for orthogonal frequency division multiplexing (OFDM) system as it reduces the efficiency of high-power amplifiers commonly used in the transmitter and causes spectral spillage. OFDM transmissions are also sensitive to frequency selective fading channels which can severely attenuate certain parts of the signal making it much more vulnerable...
Although non-coherent multicarrier on-off keying (MOOK) is a relatively bandwidth inefficient technique, the simplicity of its transmitter-receiver pair and inherent coding ability make it a popular choice for a number of communication systems. This technique however is particularly susceptible to frequency selective fading channels which are often encountered in the wireless environment. The purpose...
The simplicity of the required transmitter-receiver pair and inherent coding ability of non-coherent multicarrier on-off keying (MOOK) are the reasons for its popular choice for a number of communication systems. Among the disadvantages for this technique however are its relative bandwidth inefficiency and its susceptibility to frequency selective fading channels which are often encountered in the...
Although multicarrier on-off keying (MOOK) is a relatively bandwidth inefficient technique, the simplicity of its transmitter-receiver pair and inherent coding ability make it a popular choice for a number of communication systems. This technique however is particularly susceptible to frequency selective fading channels which are often encountered in the wireless environment. The aim of this paper...
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