611 citations · 4.1k across the 145 of their papers we have counts for
15 papers · 1 filter
Centralized Power Control in Cognitive Radio Networks Using Modulation and Coding Classification Feedback
Anestis Tsakmalis, Symeon Chatzinotas, Björn Ottersten
In this paper, a centralized Power Control (PC) scheme and an interference channel learning method are jointly tackled to allow a Cognitive Radio Network (CRN) access to the freque…
Performance Analysis of Underlay Cognitive Radio Systems: Estimation-Throughput Tradeoff
Ankit Kaushik, Shree Krishna Sharma, Symeon Chatzinotas +2
In this letter, we study the performance of cognitive Underlay Systems (USs) that employ power control mechanism at the Secondary Transmitter (ST). Existing baseline models conside…
Precoding in Multibeam Satellite Communications: Present and Future Challenges
Miguel Ángel Vázquez, Ana Pérez-Neira, Dimitrios Christopoulos +5
Whenever multibeam satellite systems target very aggressive frequency reuse in their coverage area, inter-beam interference becomes the major obstacle for increasing the overall sy…
Ensemble of Example-Dependent Cost-Sensitive Decision Trees
Alejandro Correa Bahnsen, Djamila Aouada, Bjorn Ottersten
Several real-world classification problems are example-dependent cost-sensitive in nature, where the costs due to misclassification vary between examples and not only within classe…
Joint Channel Estimation and Pilot Allocation in Underlay Cognitive MISO Networks
Maha Alodeh, Symeon Chatzinotas, Bjorn Ottersten
Cognitive radios have been proposed as agile technologies to boost the spectrum utilization. This paper tackles the problem of channel estimation and its impact on downlink transmi…
Symbol Based Precoding in The Downlink of Cognitive MISO Channels
Maha Alodeh, Symeon Chatzinotas, Bjorn Ottersten
This paper proposes symbol level precoding in the downlink of a MISO cognitive system. The new scheme tries to jointly utilize the data and channel information to design a precodin…