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A fast phase alignment algorithm using successive approximation register (SAR) is proposed for all-digital phase interpolator (PI)-based clock and data recovery circuits (CDR). The SAR algorithm is performed at the beginning of data reception allowing PI-based CDRs to achieve phase lock in few tens of bit-periods. Further phase tracking and data recovery is done by a conventional PI-based CDR to avoid...
Cloud computing uses internet data centers to host applications and data storage. Cloud computing resources and services are offered to customers on pay-per-use model while the quality of the offered resources and services are defined using service level agreements also known as SLAs. Unfortunately, there is no standard mechanism to verify and assure that services delivered by the cloud provider satisfy...
A charge pump circuit to minimize current mismatch and current variation over a wide voltage compliance range is proposed. A feedback loop is used to cancel both deterministic and random mismatches between charging and discharging current to minimize PLL reference spurs and static phase offset. A current compensation circuit is used to minimize current variation to avoid bandwidth variation and loop...
A novel 1-to- broadband “-wave” power divider/combiner with reflection cancellation is presented and demonstrated. The new -wave structure provides reflection cancellation and output port isolation with 1-to- (arbitrary ) signal splitting or -to-1 summing. It has low loss due to its use of low-impedance transmission lines and provides a relative bandwidth of 50%–200%. The concept is...
The paper presents the design of Interdigital Band Pass Filter (IBPF) for WLAN applications at center frequency 2.45GHz. It was designed using a 3D EM simulation tool and fabricated on substrate Ferro A6S by using in-house process of Low Temperature Co-fired Ceramic (LTCC) technology. Simulated and measured results were presented. The pass band insertion loss of the filter was measured to be -1.66dB...
In this paper we study the video streaming bandwidth of peer-to-peer streaming networks where the underlying topology is a complex network. We focus on the maximal streaming rate and how it depends on the type of network. We consider networks such as small world networks, scale free networks, locally connected networks and random networks. The experimental results indicate that a more connected graph...
Today, we are in a world where several radio networks arise: we speak about mobile networks, wireless networks (IEEE 802.11, .15, .16, .20, .21...), networks of sensors, radio-frequency identification networks (RFID) and more generally networks of ldquoThings connected via radio interfacerdquo. In this heterogeneous environment, a user with a multi-interface terminal can have access to the networks...
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