Knowledge Base

Title Authors Last Update Category
Radio Frequency Interference in DSL and Capacity Reduction Padmabala Venugopal

The issue of radio frequency interference in Digital Subscriber Line (DSL) networks is of particular concern in urban areas with many strong radio sources nearby. Prior work by Harris et al showed drastic decreases in DSL link capacity with a narrowband AM interferer. The purpose of this thesis was to investigate in more detail the mechanisms underlying the capacity reduction observed by Harris. In this thesis, an ADSL system, channel, and radio frequency interference noise were simulated in MATLAB. The capacity reduction due to different RF ingress conditions was studied. It was found that a narrowband interferer does not cause a drastic decrease in capacity if time and frequency domain equalizers are employed in the receiver. Contrary to Harris?s suggestions that spectral spreading of the interferer is the primary cause of capacity reduction, it is shown in this thesis that such spreading is a secondary effect and that the unequalized channel is the predominant source of capacity reduction.

April 23, 2002 Theses
Routing OSPFv2 Guide UNH-IOL

This document describes the OSPF Protocol.

July 21, 2008 Tutorials
RSP: Development of an 802.11 MAC Richard L. Lynch

In the growing world of ubiquitous networking, people often take for granted that interoperability exists between their network devices and the networks they are connecting to. Consortium vendors and international standards bodies are formed to establish standards on how devices should behave if they wish to communicate with each other. However, verifying conformance to these standards is no trivial task. The RSP was developed to add to the Wireless LAN Consortium's testing capabilities. The RSP has the capability of reacting to wireless traffic in a manner that tests a device's handling of uncommon, but very important conditions. The RSP Consists of an 802.11 MAC'less card from Intersil, interfaced to an Altera programmable logic device, which in turn communicates with a PC through a USB microcontroller.

September 18, 2014 White Papers
RVU Alliance Testing Robert Noseworthy

The UNH-IOL is an approved RVU Alliance Independent Certification Vendor (ICV). With a UNH-IOL Home Networking (HNC) membership companies are able to certify an unlimited amount of devices in a year. For companies looking to obtain RVU Alliance certification for only a few devices a year, the HNC offers pay-as-you-go RVU test services. Please note, these test services are available to RVU Alliance™ members only.

April 17, 2015 White Papers
SAS_Clause_5_Considerations IOL

Topics of transmission Speeds and Unit Intervals, OOB Construction, and Differential Signaling.

September 23, 2014 Tutorials
SAS_Clause_6 IOL

Discussing OOB State Machine, speed negotiation, 8b10B Encoding and Synchronization State Machine.

September 23, 2014 Tutorials
SAS_Clause_7 IOL

Presenting Clause 7 with a primitive Overview, Primitive Types and definitions, and open Connection Handshake.

September 23, 2014 Tutorials
SAS_Clause_9 IOL

Presenting the topics of Transport Layer Protocols: SSP, SMP and STP.

September 23, 2014 Tutorials
SAS_Testing IOL

Overview of the physical Layer Test Suites and Equipment, Protocol test suites and equipment and Interop testing.

September 23, 2014 Tutorials
SAS_Use_Cases IOL

Overview of the types of SAS Devices, SAS/SATA Interop, and cables and Connector Types.

September 23, 2014 Tutorials