In this paper, we extend ultra-wideband (UWB) single input single output (SISO) systems with a hybrid pulse amplitude and position modulation (PAPM) to single input multiple output (SIMO) systems using receive antenna diversity. The performance of a rake receive diversity combining scheme for UWB SIMO systems with a PAPM is examined in a log-normal multipath fading channel and also compared wit...

Contained herein is a simple explanation of how antenna diversity maximizes the range of a Wireless LAN. Furthermore, Oberon’s technique for simultaneously exploiting spatial and polarization antenna diversity to minimize antenna signal fading correlation is explained. Finally, simulation results for Evaluate and Switch diversity combining is given over various levels of channel fading correlat...

We investigated the performances of the diversity combining and the adaptive combining schemes. Based on the results, we propose a hybrid combining for a dual smart antenna system at handsets for the 3GPP WCDMA system and present the performance of the hybrid combining scheme. The proposed hybrid combiner intends to exploit the advantages of the two combining schemes. We considered two differen...

In this paper we mainly focus on the information-theoretic capacity of multiple-input multiple-output (MIMO) independent and identically distributed Rayleigh flat-fading channels assuming equal power allocation to each of the transmit antennas. Multiple-antenna systems, MIMO improves the capacity and reliability of wireless communications. MIMO system can improve wireless communication in spati...

This paper describes the work on methods for combining rules obtained by machine learning systems. Three methods for obtaining the classification of examples with those rules are compared. The advantages and disadvantages of each method are discussed and the results obtained on three real world domains are commented. The methods compared are: selection of the best rule; PROSPECTOR-like probabil...

Performance of diversity systems is often evaluated under the assumption of perfect interleaving and characterised in terms of long-term parameters such as the average bit-error rate, which does not capture the dynamics of fading channels. Statistical characteristics (static and dynamic) of the envelope of two correlated Rayleigh fading channels are explored using a physical model. For two popu...

In this paper, we argue that the metaphor form of a comparison (i.e., a topic-vehicle pair) is preferred over, and more comprehensible than, the simile form when the interpretive diversity for that comparison is high. Interpretive diversity refers to the richness of the figurative meaning of a comparison; it is high to the extent that more features or properties are related to the figurative me...