Abstract
Presently, various applications are proposed and developed in the Internet of Things (IoT) area. These applications include smart home, office automation, agriculture, and big molls, where data transmission wirelessly, within the prescribed area, is one of the crucial tasks. Cost-effective, wireless transmission of the data over short-range with low power is essential. Bluetooth, an ad-hoc wireless network, can be one of the suitable candidates in this scenario. An attempt is made through this paper to modify the Bluetooth protocol and provide a high data rate, high throughput, spectral efficiency, cost-effective solution to IoT applications for short-distance communication. Modulation scheme, packet type, and transmission power are made adaptive to available channel link quality. During high traffic channel condition robust BPSK modulation scheme with small data packets are transmitted, while in low traffic, a higher-level DQPSK modulation scheme is used with large packet size and during average traffic the GFSK modulation technique is employed with the medium size data packet. This increases the average throughput by 14.92%, and spectral efficiency by 4.18%
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