We simulate both the throughput and the delay of an experimental 7×622 Mbps SAC-OCDMA system. Our results reveal that the RT protocol performs better than S-ALOHA CDMA protocol and provides a 4.5 dB improvement.

Motivated by the need to distribute large volumes of scientific data to large numbers of subscribers, we propose a reliable multicast transport protocol. Specifically, this protocol is developed for use on virtual circuits, since dynamic circuit services are now being offered by large providers, and virtual circuit networking is well suited to multicasting as it eliminates the data-plane conges...

A set of physical layer specifications is provided for a single-band and a dual-band UWB system. Both systems fulfill the FCC regulations on UWB devices. Only the singleband system fulfills the physical layer requirements from IEEE 802.15.3a. The single-band system gives reliable communication, i.e., a 90th-percentile PER equal to 8% for 1024 payload bytes, at 110 Mbps with a transmitter–receiv...

This paper discusses the performance testing experiences of a 622.08 Mbps OC12 link. The link will be used for large bulk data transfer, and as such, of interest are both the ATM level throughput rates and end-to-end TCP/IP throughput rates. Tests were done to evaluate the ATM switches, the IP routers, the end hosts, as well as the underlying ATM service provided by the carrier. A low level of ...

Current IEEE 802.11 wireless local area network (WLAN) standard products can provide up to 54 Mbps raw transmission rate, while non-standard WLAN products with 108 Mbps have already appeared in the market, and the next generation WLAN will provide much higher transmission rates. However, the medium access control (MAC) was designed for lower data rates, such as 1–2 Mbps, and it is not an effici...

All rights reserved by www.ijsrd.com 535 FPGA to PC Ethernet Communication using Media Independent Interface (MII) Mode Preeti Kumari Sidharth Kashyap Ajit Jain Lokesh Sharma Department of Electronics Engineering CDAC Noida, GGSIPU Delhi Abstract— As the advancement in the embedded system technology, Field programmable gate array (FPGA) based systems are playing significant role. In many applic...

Possible Difference in the Sympathetic Activation on Extreme Dippers With or Without Exaggerated Morning Surge To the Editor: We read with great interest the report by Grassi et al1 that sympathetic activation is responsible for the nocturnal blood pressure (BP) dipping status in hypertensive subjects. We agree that reverse dipping status is characterized by a marked sympathetic activation. We ...

Cloud servers are generally used for data storage and remote office activities, but it can be applied gaming purposes, where cloud paired with virtual machines platform that accessed by users via an internet connection. This makes the device user no longer needs to process resources because workload is carried out on server. The author designs a system using Google as server parsec optimizer at...

Bandwidth-intensive applications compete directly with the operating system’s network stack for CPU cycles. This is particularly true when the stack performs security protocols such as IPsec; the additional load of complex cryptographic transforms overwhelms modern CPUs when data rates exceed 100 Mbps. This paper describes a network-processing accelerator which overcomes these bottlenecks by of...