Ihsan, Asim Chen, Wen Khan, Wali Ullah Wu, Qingqing Wang, Kunlun
This work presents non-orthogonal multiple access (NOMA) enabled energy-efficient alternating optimization framework for backscatter aided wireless powered uplink sensors communications for beyond 5G intelligent transportation system (ITS). Specifically, the transmit power of carrier emitter (CE) and reflection coefficients of backscatter aided roa...
Khan, Wali Ullah Lagunas, Eva Mahmood, Asad Ali, Zain Chatzinotas, Muhammad Asif Symeon Ottersten, Björn
Reflecting intelligent surfaces (RIS) has gained significant attention due to its high energy and spectral efficiency in next-generation wireless networks. By using low-cost passive reflecting elements, RIS can smartly reconfigure the signal propagation to extend the wireless communication coverage. This letter proposes a new optimization scheme in...
Dazhi, Michael Al-Hraishawi, Hayder Mysore Rama Rao, Bhavani Shankar Chatzinotas, Symeon
This paper introduces the concept of multi-connectivity (MC) to the multi-orbit non-terrestrial networks (NTNs), where user terminals can be served by more than one satellite to achieve higher peak throughput. MC is a technique initially introduced by the 3rd Generation Partnership Project (3GPP) for terrestrial communications in 4G and 5G, it has ...
Abdul, Wahid Ahmed, Manzoor Laique, Sayed Shariq Khan, Wali Ullah Ihsan, Asim Xu, Fang Chatzinotas, Symeon Han, Zhu
The recent development of metasurfaces, which may enable several use cases by modifying the propagation environment, is anticipated to have a substantial effect on the performance of 6G wireless communications. Metasurface elements can produce essentially passive sub-wavelength scattering to enable a smart radio environment. STAR-RIS, which refers ...
Al-Hraishawi, Hayder Junaid, ur Rehman Mohsen, Razavi Chatzinotas, Symeon
Quantum technologies have been widely recognized as one of the milestones towards the ongoing digital transformation, which will also trigger new disruptive innovations. Quantum technologies encompassing quantum computing, communications, and sensing offer an interesting set of advantages such as unconditional security and ultra-fast computing capa...
Abdullah, Osamah Al-Hraishawi, Hayder Chatzinotas, Symeon
Location-based services are witnessing a rise in popularity owing to their key features of delivering personalized digital experience. The recent developments in wireless sensing techniques make the realization of device-free localization (DFL) feasible within wireless sensor network (WSN) architectures. The DFL is an emerging technology that utili...
Gonzalez Rios, Jorge Luis Vazquez, Diego Moreno, Robson Merlano Duncan, Juan Carlos Jensen, Ole K. Chatzinotas, Symeon Ottersten, Björn
Khan, Wali Ullah Lagunas, Eva Ali, Zain Javed, Muhammad Awais Ahmed, Manzoor Chatzinotas, Symeon Ottersten, Björn Popovski, Petar
Unmanned aerial vehicles (UAVs) are an important component of next-generation wireless networks that can assist in high data rate communications and provide enhanced coverage.Their high mobility and aerial nature offer deployment flexibility and low-cost infrastructure support to existing cellular networks and provide many applications that rely on...
Nguyen, Minh-Sang Van Do, Dinh-Thuan Phan, Van-Duc Khan, Wali Ullah Imoize, Agbotiname Lucky Fouda, Mostafa M.
In this work, we design an intelligent reflecting surface (IRS)-assisted Internet of Things (IoT) by enabling non-orthogonal multiple access (NOMA) and unmanned aerial vehicles (UAV) approaches. We pay attention to studying the achievable rates for the ground users. A practical system model takes into account the presence of hardware impairment whe...
Mostaani, Arsham Vu, Thang Xuan Sharma, Shree Krishna Nguyen, Van-Dinh Liao, Qi Chatzinotas, Symeon
Communication system design has been traditionally guided by task-agnostic principles, which aim at efficiently transmitting as many correct bits as possible through a given channel. However, in the era of cyber-physical systems, the effectiveness of communications is not dictated simply by the bit rate, but most importantly by the efficient comple...