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In 3G cellular networks, the release of radio resources is controlled by inactivity timers. However, the timeout value itself, also known as the tail time, can last up to 15 seconds due to the necessity of trading off resource utilization efficiency for low management overhead and good stability, thus wasting considerable amount of radio resources and battery energy at user handsets. In this paper,...
We propose an adaptive technique to design the spectrum of an orthogonal frequency division multiplexing (OFDM) waveform to improve the radar's wideband ambiguity function (WAF). The adaptive OFDM signal yields a better auto-correlation function (ACF) that results into an improved delay (range) resolution for the radar system. First, we develop a mutlicarrier OFDM signal model and the corresponding...
In this paper, a fast RF BIST-driven post-manufacture tuning methodology for yield improvement of RF transceiver systems is presented. The core algorithms optimize multiple transceiver performance metrics concurrently using a hardware-iterated gradient search algorithm that uses diagnostic BIST data to guide the tuning of circuit and software level parameters. Intelligent ??initial guess?? values...
Enterprise networks are increasingly adopting layer 3 multiprotocol label switching (MPLS) virtual private network (VPN) technology to connect geographically disparate locations. The any-to-any direct connectivity model of this technology involves a very high memory footprint and is causing associated routing tables in the service provider's routers to grow very large. The concept of relaying was...
In order to maintain power transmission reliability, application of single-phase switching (SPS) and auto-reclosing on EHV line is a common practice. However, in some cases, it is necessary to apply special means like neutral grounding reactor (NGR) to improve the conditions for secondary arc extinction for successful auto-reclosing. This paper presents importance of various parameters in optimization...
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