Abstract: The ISO/IEEE 11073 (a.k.a. x73) specifications adopted by the Continua Health Alliance constitute the international personal healthcare device (PHD) communication standards. These standards allow medical devices to intercommunicate and exchange measurement data within a single system. The Bluetooth special interest group (SIG) introduced a Bluetooth Low Energy (LE) technology with reduced power consumption. The Bluetooth LE can be used in medical devices with low data transmission rates. The research aims to identify a practical solution for the Continua BLE glucose monitor. Based on the Bluetooth LE standards as well as the Continua design guidelines and x73-PHD standards, the proposed Continua BLE glucose monitor is developed. The Continua BLE glucose monitor takes glucose measurements from the user and transmits these data to the gateway via the Bluetooth LE interface, in compliance with the Bluetooth GATT-based data format and protocol standards. Our results show that glucose measurements can be successfully transmitted to an Android-based gateway and Continua-compliant gateway through the Bluetooth LE interface. The practical solution is also feasible for other medical devices, for instance, blood pressure monitor or thermometer.Abstract: The ISO/IEEE 11073 (a.k.a. x73) specifications adopted by the Continua Health Alliance constitute the international personal healthcare device (PHD) communication standards. These standards allow medical devices to intercommunicate and exchange measurement data within a single system. The Bluetooth special interest group (SIG) introduced a Bluetoot...Show More
Abstract: Modern OFDM systems provide effective spectral usage by allowing overlapping in the frequency domain. Moreover, it is highly resistant to multipath delay spread. The suppression of inter-symbol interference (ISI) is one of the top features of OFDM. It also facilitates mobile bandwidth allocation and may increase the capacity in terms of number of users. Even though the presence of OFDM’s built in error preventing mechanism; error tends to occur that averts delivery of proper signal. In this work we evaluated and adapted ways of fine-tuning for different error correction methods so that they may bring positive impact on communication systems who are developing and using OFDM. Here the performance of different known error correcting techniques for OFDM systems have been analyzed after extending and puncturing feature is applied on them. Simulations are performed in well-known simulator MATLAB to evaluate the modified techniques for different channel conditions. As the advantage of OFDM based systems are mainly the robustness to channel impairments and narrow-band interference; thus added error reduction models will improve significant efficiency of systems based on OFDM.Abstract: Modern OFDM systems provide effective spectral usage by allowing overlapping in the frequency domain. Moreover, it is highly resistant to multipath delay spread. The suppression of inter-symbol interference (ISI) is one of the top features of OFDM. It also facilitates mobile bandwidth allocation and may increase the capacity in terms of number of u...Show More
