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This paper presents a particle filter algorithm for distance estimation using multiple antennas on the receiver’s side and only one transmitter, where a received signal strength indicator (RSSI) of radio frequency was used. Two different placements of antennas were considered (parallel and circular). The physical layer of IEEE standard 802.15.4 was used for communication between transmitter and receiver...
When we have a complex system, it is important to have integrated devices which are independent or at least almost independent. This ensures the proper functioning of the system, although a device (unit) breaks down, which does not cause a chain reaction of errors or failures in the system or a break down of the whole system. In this article we will give an example of an existing system, which is...
This paper presents a novel digital data modulation and demodulation algorithm ARDMA based on the principles of autoregressive modeling (AR) of speech production. In the first step a sustained voiced speech signal characteristics are analyzed using autoregressive modeling principle and then the two sets of linear prediction (LPC) coefficients are obtained and converted to linear spectrum frequencies...
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