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Auroral zone irregularities affect a broad swath of radio frequencies through rapid phase fluctuations in the received signal experienced by the receiver, known as scintillation. Scintillation can lead to loss of HF communications and L-band satellite-based navigation through receiver loss of lock. For this reason, the ability to quantify the severity and predict the occurrence of high-latitude scintillation...
The major part of the outdoor locating systems can be categorized into the following two approaches. One is based on the global positioning system (GPS), the other is based on the cellular network system. Although the approaches of these two major systems have been shown to be effective in outdoor environments, their positioning capabilities are limited in indoor or Non-Line-of-Sight (NLOS) environments...
Recently, hierarchical modulation has been considered as a way to increase the payload data in terrestrial digital multimedia broadcasting (T-DMB) transmission systems. This paper proposes a robust symbol synchronization method for T- DMB receivers working in the hierarchical modulation mode. The proposed method employs a timing error detector (TED) which produces a timing phase error at OFDM symbol...
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