The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A 10–20 Gb/s clock and data recovery (CDR) circuit with frequency tracking is presented. Two digital phase interpolators (PIs) are used to track the frequency of input data. The loop bandwidth of the CDR circuit is adaptively adjusted. A mixed-mode PI is used to generate the recovered clock. This CDR circuit is fabricated in a 40nm CMOS process and its area is 0.33×1.0 mm2. Its power consumption is...
A digital bang-bang phase-locked loop (BBPLL) with bandwidth calibration is presented. The proposed bandwidth calibration circuit adjusts the proportional and integral gain of the digital loop filter to tolerate the process, voltage and temperature (PVT) variations. This BBPLL is fabricated in 40-nm CMOS technology. Its active area is 0.0049 mm2 and the power is 3.34 mW from a supply of 1.1 V. The...
This paper introduces a new code for asynchronous channel without a common clock between sender and receiver. In communication systems like magnetic recording systems, the existing solutions use the Run Length Limited (RLL) code to prevent errors due to time jitter. In addition, a long communication period is chopped into sessions so that other errors due to environmental noise cannot propagate over...
Global enterprises are increasingly adopting unified communication solutions over traditional telephone systems. Such solutions provide integrated audio/video conferencing and messaging services, and enable flexible working environments by allowing mobile and dispersed users to communicate and collaborate easily and efficiently. The ultimate goal of unified communications is to ensure a smooth and...
Voice over Internet (VoIP) has been experiencing enormous growth in recent years. While posed to replace traditional PSTN for both enterprise and residential customers, VoIP has yet to achieve the same level of quality and reliability as PSTN. One key challenge is that a growing segment of customers is increasingly relying on WiFi connections. VoIP over WiFi (VoWiFi) experiences significant degradation...
Hand jitters result in unintentional fluctuation of image sequences taken by hand-held video cameras. Stabilization of the foreground object of interest in pictures is essential for good visual quality. In this paper, foreground stabilization algorithms of image sequences are proposed and evaluated. After performing the block-based motion estimation, grouping techniques are used to identify the foreground...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.