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This paper investigates the performance of wireless communications using orbital angular momentum multiplexing in terms of modulation/demodulation, multiplexing/demultiplexing, and power control. This work enabled us to clarify the effect of mode-dependent power attenuation and provides insight regarding the potential and limitations of OAM-based wireless communications.
Real-time and robust communication is essential for wireless control systems (WCS). Preambles are considered as significant communication overheads in WCS where payloads are typically small. To shorten the overhead in OFDM systems, previous works have considered fixed subcarrier sampling to obtain subcarrier-fixed short preambles (SFSP) and adopted frequency-direction interpolation (FDI) for channel...
Wireless sensor networks generate big-data which leads to overwhelming traffic in the networks. Compressed sensing (CS) can exploit signal sparsity to reduce the amount of traffic. We evaluate the performance of 1-bit CS with a circulant random bipolar measurement matrix. The results show that 1-bit CS can decrease traffic at higher degree in wireless sensor networks compared to the conventional CS...
We study interaction between gradient-based subcarrier allocation algorithms and TCP traffic sources in a downlink single-hop OFDMA wireless system. Specifically, we are interested in evaluating the maximum-rate (Max-SNR), Proportional Fair (PF), and queue-based Max-Weight (QBMW) subcarrier schedulers, in both non-iterative and iterative versions, with long-lived TCP fluid traffic. Using system throughput...
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