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The exponentially increasing number of Internet of things (IoT) devices introduces spectrum crisis to the widely used industrial, scientific, and medical (ISM) frequency band. Since IoT devices use heterogeneous radios with different bandwidths (e.g., 20 MHz for WiFi and 2 MHz for ZigBee), traditional interference avoidance methods, such as time-division multiple access (TDMA) and carrier-sense multiple...
The exponentially increasing number of IoT devices makes the unlicensed industrial, scientific, and medical (ISM) radio bands (e.g., 2.4 GHz) extremely crowded. Currently, there is no efficient solution to coordinate the large amount heterogeneous IoT devices that have different communication technologies (e.g., WiFi and ZigBee). To fill this gap, in this paper, we introduce embedded multiple flows...
In wireless networks, the performance is degraded by the intensity of the interference received from concurrent transmissions. Considering a stochastic cache-enabled network where some users have caching ability to store the most popular packets, we propose a novel interference management scheme to eliminate the interference by exploiting the content diversity. First, cache-enabled users can exploit...
In this paper, we aim to optimize the secrecy rate of the cellular user (CU) in a single cell where the Device-to-Device (D2D) communication shares the uplink resource with CU. The interference link from CU to the D2D receiver can be considered as the eavesdropping link in the sense that the D2D receiver may try to decode the cellular user's message. The proposed scheme aims to optimize the achievable...
In this paper, we propose a novel resource sharing strategy to improve the overall system throughput of a device-to-device (D2D) communication system underlaying a cellular network. Aiming to optimize the overall system throughput, the constraint of the leakage data from the cellular user is illustrated, considering the D2D receiver as a malicious partner sharing the spectrum with it. The optimality...
In mobile multiple-access communications, not only the location of active users, but also their number varies with time. In typical analysis, multiuser detection theory has been developed under the assumption that the number of active users is constant and known at the receiver, which coincides with the maximum number of users entitled to access the system. This assumption is often overly pessimistic,...
In mobile multiple-access communications, not only the location of active users, but also their number varies with time. In typical analysis, multiuser detection theory has been developed under the assumption that the number of active users is constant and known at the receiver, and coincides with the maximum number of users entitled to access the system. This assumption is often overly pessimistic,...
In mobile multiple-access communications, not only the location of active users, but also their number varies with time. In typical analysis, multiuser detection theory has been developed under the assumption that the number of active users is constant and known at the receiver, and coincides with the maximum number of users entitled to access the system. This assumption is often overly pessimistic,...
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