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.
Timing jitter is emerging as an important factor in determining the performance of high-speed orthogonal frequency division multiplexing (OFDM) systems, particularly in optical OFDM systems where bit rates reach 100 Gbit/s and beyond. In this paper, we propose a novel timing jitter matrix which is used to study the rotational effect and intercarrier interference (ICI) caused by timing jitter in high-speed...
Beyond 3G wireless systems will support real time and elastic traffic over a common packet-switched radio channel using QoS mechanisms. This paper studies the key question of how to estimate the throughput performance of "best effort" elastic traffic when it is subject to available capacity variations due to changes in (i) the amount of higher priority traffic and (ii) the radio channel...
This paper studies throughput metrics for elastic traffic in a beyond 3G wireless system with QoS differentiation. We extend previous work by studying the capacity for elastic traffic subject to simultaneous variation due to the loading of higher priority traffic and the radio channel. The results yield novel insights that show: (i) load dependence in determining an optimal throughput metric, (ii)...
This paper presents an analysis of hybrid delay/blocking systems with data quality of service (QoS) subject to bursty elastic data traffic, and with wide application to wireless access networks. A key result is that the performance of low priority background traffic for both data resource allocation schemes studied (FRA and RREFS) is largely independent of the burstiness of the traffic. Indeed, the...
This paper presents an analysis of a hybrid delay /blocking system model with wide applicability in wireless networks. Real time voice traffic operates under a "blocked calls cleared" regime while non-real-time data is delayable. These traffic types compete for a fixed number of servers under two schemes: (i) first come first served (FCFS) and (ii) pre-emption (PE) of ongoing data calls...
The theory of integer recurrence relations is applied to give a new algebraic algorithm SYN ENUM which computes the path weight enumerator of a convolutional code. This algorithm may therefore be used to obtain performance bounds for a maximum likelihood decoder of a convolutional code. The path weight enumerator of a well known (2, 1, 6) code is computed.<<ETX>>
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.