A5063954834- Cooperative Communication and Network Coding
- Wireless Communication Security Techniques
- Optical Wireless Communication Technologies
- Advanced Wireless Communication Technologies
- Advanced MIMO Systems Optimization
- Wireless Communication Networks Research
- Cell Image Analysis Techniques
- Advanced Wireless Network Optimization
- Advanced Photonic Communication Systems
- Digital Imaging for Blood Diseases
- Bluetooth and Wireless Communication Technologies
- IPv6, Mobility, Handover, Networks, Security
- UAV Applications and Optimization
- AI in cancer detection
- Radio Wave Propagation Studies
- Millimeter-Wave Propagation and Modeling
- Water Quality Monitoring Technologies
- VLSI and Analog Circuit Testing
- Parallel Computing and Optimization Techniques
- Underwater Acoustics Research
- Embedded Systems Design Techniques
- Underwater Vehicles and Communication Systems
- Cognitive Radio Networks and Spectrum Sensing
- Full-Duplex Wireless Communications
Özyeğin University
2020-2024
Işık University
2008-2014
Turkcell (Turkey)
2010
Mobile communication plays a significant role in telecommunications industry. Next new generation mobile technology, fourth (4G), promises the full mobility with high speed data rates. Although there is no formal definition, two possible technologies are expected to cover requirements for 4G; LTE Advanced and 802.16m or WiMAX 2. In this paper, we aim introduce global wireless illustrated Figure 1 share operative perspective coming 4G.
For a three user Gaussian multiple access channel (MAC), we propose new superposition block Markov encoding based cooperation scheme. Our scheme allows the users to simultaneously cooperate both in pairs, and collectively, by dividing transmitted messages into sub-messages intended for each cooperating partner. The proposed decoding at transmitters take account relative qualities of links between transmitters. We obtain evaluate achievable rate region on our strategy, compare it with rates...
In this paper, we focus on the radio resource management problem for Orthogonal Frequency Division Multiple Access (OFDMA)-based mobile relay-enhanced heterogenous cellular networks. We combine relaying and data offloading scenarios to increase capacity of system cope with traffic volume that is increased by number wireless subscribers accessing services. propose network interface selection, relay selection allocation solutions scenario show effect ratio satisfied users.
For a three user cooperative multiple access channel (MAC), we propose new block Markov superposition encoding strategy, which enables all users to cooperate collectively as well in pairs. We obtain the resulting achievable rate expressions and compare them with existing two strategies. demonstrate that significant gains may be possible, without resorting adaptive encoding/decoding techniques. investigate contributions from pairwise collective cooperation signals while achieving tuples on...
We consider a three-user fading cognitive cooperative multiple access channel (MAC) with one primary and two secondary transmitters. propose encoding/decoding strategies varying levels of cooperation, based on block Markov superposition encoding backward decoding. The first is an overlay model, where the users (SUs) aid transmission user (PU) by causally decoding PU message forwarding it while also cooperating among each other. second underlay SUs cooperate other's messages treating signal...
For a cooperative Gaussian multiple access channel (MAC), we propose new adaptive three user cooperation strategy, based on non-trivial extension of block Markov superposition encoding. We obtain the expressions for resulting achievable rate region. demonstrate through simulations that participation an extra in provides significant improvements. The proposed strategy also improves upon our earlier results MAC [1], under certain conditions.
Millimeter wave (MMW) communication was proposed as a high-bandwidth wireless access solution to cope with the increasing user demand for mobile data and has been already standardized in 5G networks. As another highcapacity operation unregulated optical spectrum, visible light communication, also known LiFi, further literature. Hybrid networks are particularly attractive exploit complementary features of LiFi MMW technologies. In this paper, we consider hybrid LiFi/MMW system investigate how...
Airborne nodes in the form of high-altitude platform stations (HAPSs) or unmanned aerial vehicles (UAVs) can be used for backhauling and wireless access. In this paper, we investigate cascaded free space optical (FSO)/terahertz (THz) link which FSO serves as a backhaul between gateway airborne node. contrast, THz provides communication node user. We present channel models, including atmospheric attenuation, geometrical loss, fading effect. The sub-system builds upon intensity-modulation...