Search Results - "Kristem, Vinod"

Jammer Sensing and Performance Analysis of MC-CDMA Ultrawideband Systems in the Presence of a Wideband Jammer by Kristem, Vinod, Molisch, Andreas F., Christen, Louis

“…Jamming, either intentional or unintentional, is a big, and increasingly prevalent, problem for many wireless communications systems. A well-known…”
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Outdoor Wideband Channel Measurements and Modeling in the 3-18 GHz Band by Kristem, Vinod, Bas, C. Umit, Wang, Rui, Molisch, Andreas F.

“…Fifth generation cellular systems will operate in a wide range of frequencies, covering both the traditional cellular bands, and mm-wave frequency bands,…”
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A Kernel-Power-Density-Based Algorithm for Channel Multipath Components Clustering by Ruisi He, Qingyong Li, Bo Ai, Yang Li-Ao Geng, Molisch, Andreas F., Kristem, Vinod, Zhangdui Zhong, Jian Yu

“…Cluster-based channel modeling has been an important trend in the development of channel model, as it maintains accuracy while reducing complexity. Whereas a…”
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Real-Time Ultra-Wideband Channel Sounder Design for 3-18 GHz by Bas, C. Umit, Kristem, Vinod, Wang, Rui, Molisch, Andreas F.

“…This paper presents the system design, calibration, and example measurements of a novel ultra-wideband, low-cost, real-time channel sounder. The channel…”
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3D MIMO Outdoor-to-Indoor Propagation Channel Measurement by Kristem, Vinod, Sangodoyin, Seun, Bas, C. Umit, Kaske, Martin, Lee, Juho, Schneider, Christian, Sommerkorn, Gerd, Zhang, Charlie Jianzhong, Thoma, R. S., Molisch, Andreas F.

“…The 3-D multiple-input multiple-output (3-D MIMO) systems have received great interest recently because of the spatial diversity advantage and capability for…”
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Statistical Modeling of Ultrawideband MIMO Propagation Channel in a Warehouse Environment by Sangodoyin, Seun, Kristem, Vinod, Molisch, Andreas F., Ruisi He, Tufvesson, Fredrik, Behairy, Hatim Mohammed

“…This paper describes an extensive propagation channel measurement campaign in a warehouse environment for line-of-sight (LOS) and nonline-of-sight (NLOS)…”
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An 802.11ba-Based Wake-Up Radio Receiver With Wi-Fi Transceiver Integration by Liu, Renzhi, Beevi K.T., Asma, Dorrance, Richard, Dasalukunte, Deepak, Kristem, Vinod, Santana Lopez, Mario A., Min, Alexander W., Azizi, Shahrnaz, Park, Minyoung, Carlton, Brent R.

“…This article presents an 802.11ba-based wake-up radio (WUR) receiver that is fully integrated within an 802.11a/b/g/n/ac Wi-Fi transceiver. Low-cost…”
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Cluster Characterization of 3-D MIMO Propagation Channel in an Urban Macrocellular Environment by Seun Sangodoyin, Kristem, Vinod, Bas, C. Umit, Kaske, Martin, Juho Lee, Schneider, Christain, Sommerkorn, Gerd, Zhang, Charlie Jianzhong, Thoma, Reiner, Molisch, Andreas F.

“…Multidimensional characterization of outdoor urban macrocellular propagation channels is essential for the analysis and design of next-generation (5G and…”
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Coherent UWB Ranging in the Presence of Multiuser Interference by Kristem, Vinod, Molisch, Andreas F., Niranjayan, S., Sangodoyin, Seun

“…Roundtrip time-of-arrival (ToA) measurements employing ultra-wideband (UWB) signals can provide high-precision ranging information. However, the accuracy is…”
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Optimal Receive Antenna Selection in Time-Varying Fading Channels with Practical Training Constraints by Kristem, Vinod, Mehta, Neelesh B, Molisch, Andreas F

“…Hardware constraints, which motivate receive antenna selection, also require that various antenna elements at the receiver be sounded sequentially to obtain…”
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Propagation Channel Characterization and Interference Mitigation Strategies for Ultrawideband Systems by Kristem, Vinod

“…Interference is a very common phenomenon in wireless communication systems. With the Radio Frequency (RF) spectrum getting increasingly crowded due to the…”
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Real-time ultra-wideband frequency sweeping channel sounder for 3-18 GHz by Bas, C. Umit, Kristem, Vinod, Rui Wang, Molisch, Andreas F.

“…This paper presents system concept, calibration and example measurements of a novel ultra-wideband, real-time channel sounder. The sounder operates in the…”
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Training for Antenna Selection in Time-Varying Channels: Optimal Selection, Energy Allocation, and Energy Efficiency Evaluation by Kristem, V., Mehta, N. B., Molisch, A. F.

“…Single receive antenna selection (AS) is a popular method for obtaining diversity benefits without the additional costs of multiple radio receiver chains…”
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An 802.11ba 495μW -92.6dBm-Sensitivity Blocker-Tolerant Wake-up Radio Receiver Fully Integrated with Wi-Fi Transceiver by Liu, Renzhi, K. T., Asma Beevi, Dorrance, Richard, Dasalukunte, Deepak, Santana Lopez, Mario A., Kristem, Vinod, Azizi, Shahrnaz, Park, Minyoung, Carlton, Brent R.

“…An 802.11ba-based wake-up radio (WUR) receiver is presented. The WUR receiver prototype is integrated within an 802.11a/b/g/n/ac Wi-Fi transceiver, occupying…”
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Ultrawideband MIMO Channel Measurements and Modeling in a Warehouse Environment by Seun Sangodoyin, Ruisi He, Molisch, Andreas F., Kristem, Vinod, Tufvesson, Fredrik

“…This paper presents a detailed description of a propagation channel measurement campaign performed in a warehouse environment and provide a comprehensive…”
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A Novel, Balanced, and Energy-Efficient Training Method for Receive Antenna Selection by Kristem, V, Mehta, N B, Molisch, A F

“…In receive antenna selection (AS), only signals from a subset of the antennas are processed at any time by the limited number of radio frequency (RF) chains…”
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An Automatic Clustering Algorithm for Multipath Components Based on Kernel-Power-Density by Ruisi He, Qingyong Li, Bo Ai, Yang Li-Ao Geng, Molisch, Andreas F., Kristem, Vinod, Zhangdui Zhong, Jian Yu

“…In the real-world environments, multipath components (MPCs) of wireless channels are generally distributed as groups, i.e., clusters. Modeling the clustered…”
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Training and Voids in Receive Antenna Subset Selection in Time-Varying Channels by Kristem, V, Mehta, N B, Molisch, A F

“…Receive antenna selection (AS) provides many benefits of multiple-antenna systems at drastically reduced hardware costs. In it, the receiver connects a…”
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Energy-efficient training for antenna selection in time-varying channels by Kristem, V., Mehta, N. B., Molisch, A. F.

“…Training for receive antenna selection (AS) differs from that for conventional multiple antenna systems because of the limited hardware usage inherent in AS…”
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A Novel Energy-Efficient Training Method for Receive Antenna Selection by Kristem, V, Mehta, N B, Molisch, A F

“…Receive antenna selection (AS), in which only a subset of antennas receive simultaneously at any time, requires the transmitter to send pilots multiple times…”
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