Abstract: The motivation behind space-time trellis code (STTC) is that STTC could fully utilise transmit diversity schemes that could reduce multipath fading in the multiantenna systems. The STTC encoding architecture which is the combination of the coefficients in the generator matrix G, provides an extension to the traditional trellis codes to multiantenna systems. Generator matrix G define the quality of STTC transmission, such that an optimal STTC (i.e full diversity and high coding gain) could be obtained through generator matrix G code search procedure. Thus, it is imperative to study the characteristics of generator matrices G, and to compare the performance of BER curves against SNR. A hundred of 16-minimum determinant (MD) generator matrices were generated from Lisya tree structure. The taxonomy of the generator matrices G was developed based on their isomorphism behaviour, which is classified into three main group namely reachable, non-reachable and fluctuated optimizations. Out of one hundred generator matrices sample, 24 percent of generic generator matrices performs the reachable characteristic, 50 percent for non-reachable characteristic and the rest were defined as fluctuated due to uncertainty of graph.

Biography: Ts. Dr. Harlisya is an Associate Professor in the Avionics Section at the UniKL MIAT, where she has been instrumental in establishing a "Satellite Communication & Avionics System Integration (SCASI)" research cluster. She is the Principal Researcher for SCASI research cluster. Her areas of research include Avionics, Satellite Communication, Complex Adaptive and Predictive Systems and System Engineering. Dr. Harlisya earned her PhD at the University of Malaya in Mobile Satellite Communication. She had her MSc in Satellite Communication at Aberdeen University, United Kingdom and her bachelor degree in Sheffield Hallam University, United Kingdom. She has been heavily involved in research lines for more than 20 years in Avionics (Satellite Communications). She registered several patents, and she has several funded research grants from national agencies. She has published papers in referred journals and conference proceedings and outstanding teaching and supervision activities at both the undergraduate and graduate levels. She was awarded a Pengajar Muda 2010 (Applied Science and Engineering Cluster), for Anugerah Pengajaran Putra UPM 2010 (APP10). She was also selected as one of the recipients for the MARA Subsidiaries Icon Award 2015 in 2016. She has supervised MSc and PhD students. She has been appointed as a peer reviewer for referred journals. She has also conducted and organised several research related workshop. Her professional membership includes Professional Technologist (Ts) (Malaysia Board of Technologist), Malaysian Society for Engineering and Technology (MySET) Fellow and Malaysian Society for Engineering and Technology (MySET) Council Member.