Professor Hongjun Xu, newly inaugurated Professor in Electronic Engineering at UKZN’s School of Engineering, presented his inaugural public lecture at Howard College under the title: “Detection Schemes for M-QAM Spatial Modulation”.

Xu, whose research interests lie in the field of digital and wireless communications and digital systems, said that future communications needed high data rate transmission, and that Multiple-Input Multiple-Output (MIMO) had been considered as a technique.  Spatial modulation (SM) was a new MIMO transmission scheme proposed recently.

 ‘The basic idea behind SM is to map a block of information bits to both a modulated  -QAM/ -ary Phase Shift Keying ( -PSK) symbol and transmit antenna index,’ he said.

In his talk, Xu presented detection schemes for M-QAM spatial modulation.  These detection schemes included the maximum likelihood (ML) based optimal detection scheme; the suboptimal detection scheme; the signal vector based detection scheme; the multistage detection scheme; the simplified ML based optimal detection scheme; and simple low-complexity detection.

Xu received his BSc degree from the University of Guilin Technology, China, in 1984 and his MSc degree from the Institute of Telecontrol and Telemeasure in Shi Jian Zhuang, China, in 1989.  In 1995 he was awarded his PhD from the Beijing University of Aeronautics and Astronautics in Beijing, China.

From 1997-2000 he was involved in postdoctoral research at the then University of Natal and at Inha University.  Over the past five years Xu has published more than 20 journal papers.

In introducing Xu, Acting DVC, Professor Deo Jaganyi, said: ‘An inaugural lecture is an important event in the life of a Professor and in the life of his or her university.  It gives new Professors the opportunity to locate themselves publicly in relation to new developments in their discipline and to articulate their visions for the future of that discipline.  I extend my warmest congratulations to Professor Xu on his promotion.’

Dean and Head of School for Engineering, Professor Cristina Trois, described Xu as ‘one of our most esteemed colleagues.’

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