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Implementing the Delta Sigma Modulator (DSM) processing blocks on hardware is challenging due to the additional tap delays required by the digital processing blocks to process and output the result. The tap‐delays, known as latency, are necessary for the Field Programmable Gate Array (FPGA) operation to allow the logic gates to process the data at a given clock rate. These latencies alter the transfer...
In the spring of 2013, Alberta experienced significant flooding. According to the government of Alberta, this flood was “the largest and most expensive natural disaster in Alberta's history” [1]. Siksika Nation was severely impacted, with almost 170 homes devastated by the flood [2]. Recovery was slow, with many families left in temporary housing or without power for several years. A community engagement...
Wireless Sensor Networks (WSNs) are generally deployed in remote sites in order to sense the environment and acquire a set of data useful for analysis, monitoring and optimization algorithms. The use of the WSNs in remote and rugged areas, where battery replacement is not practical, requires extending the network lifetime. The proposed solution in this work, is using low-power Raspberry Pi platform...
This paper presents an implementation of an alldigital transmitter architecture for software defined radio (SDR) applications. This transmitter uses a first order, sigma-delta modulator for one-bit quantization and noise shaping. The binary signal is passed through high-speed multiplexing circuits for frequency upconvertion directly from base-band to the desired carrier frequency [1]. This digital...
This paper addresses some of the considerations related to the design and implementation of multiband Global Navigation Satellite System (GNSS) receivers. In this work, the impact of the application of band-pass continuous-time delta-sigma modulation on GNSS signals was also examined. In order to facilitate the implementation of the multiband delta-sigma based GNSS receiver, a modulator architecture...
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