You are here: silicon.com > Resources > White Papers > Desktops, Laptops and OS > Components > Modems

Modems White Papers

Effects of Clipping on the Error Performance of OFDM in Frequency Selective Fading Channels

Overview Previous studies on the effect of the clipping noise on the error performance of orthogonal frequency-division multiplexing (OFDM) systems in frequency selective fading channels provide pessimistic results. They do not consider the effect of channel fading on the clipping noise. The clipping noise is added at the transmitter and hence fades with the signal. Here, the authors show that the "bad" subcarriers that dominate the error performance of the OFDM system are least affected by the clipping noise and, as a result, the degradation in the error performance of OFDM system in fading channels is very small.

Further White Paper Details
Publisher	Monash University	File Format	PDF, requires Acrobat Rdr 5
Date Published	March 2004	Downloads	31
Format	White Papers
Topics	Modems

Did you find this white paper useful? 1 out of 3 users found this white paper useful

Comparison of Iterative Detection Schemes for MIMO Systems With Spreading Based on OFDM

Publisher:
Universität Ulm

Pseudo Random Postfix OFDM Based Modulator for Next Generation 60GHz WLANs

Publisher:
Motorola

Effect of Spreading in an Outdoor MIMO-OFDM System

Publisher:
Universität Ulm

Extended Loops for Distant Phones and Fax Machines, Higher Ringing Voltage and Loop Current

Publisher:
Cisco Systems

Tags:
voip - ip telephony

Palm & Treo Hacks: Use Your Treo as a Modem

Publisher:
O'Reilly Media

Cisco in wireless technology giveaway

The ten technology partners will now work to standardise the technology under the name VOFDM (Vector Orthogonal Frequency Division Multiplexing). Cisco Systems is to offer its latest wireless access technology royalty-free to ten major IT vendors...

Channel:
Broadband & ISPs

TI's 'turbo Wi-Fi' - still born?

In the 802.11g standards battle, PBCC eventually lost ground to OFDM, or Orthogonal Frequency Division Multiplexing, as the modem of choice. Texas Instruments' 'turbo Wi-Fi' technology may be downshifting out of the wireless networking fast lane...

Channel:
PDAs

Radioactive: Bluetooth - survival of the fastest

The opposing technology approaches are orthogonal frequency division multiplexing (OFDM) and direct sequence (DS)-UWB. The former method, backed by Intel, is more complex: it chops up the signal and sends it over multiple frequency bands.

Peter Cochrane's Blog: The search for spectrum

This is the world I grew up in as a young engineer, where interference, multi-path, scatter and signal-to-noise ratio dominated all design and operational considerations. However, every time I look at the spectrum using an analyser and antenna I...

Wi-fi patent threat looms after US ruling

Csiro claims its patent covers a core method for transmitting wireless signals that use orthogonal frequency division multiplexing (OFDM) modulation, which breaks signals into different parts to transmit data simultaneously over different...

Complexity makes travellers miss their connection

In the not too distant future, you will be able to add 3G Long Term Evolution (LTE), mobile WiMax, multiple in multiple out (MiMo) and orthogonal frequency division multiplexing (OFDM) to the mix. High-speed wireless networks are meant to make life...

Live Webcast: Telecoms 2.0 - Where is telecoms heading?

In this webcast, our panel of experts will review where we are with next generation telecoms in the UK, working through the concept of 'Telecoms 2.0': - Realising the potential of Next Generation Networks - why it isn't just about the technology? - What attributes should firms be looking for in their telco partner? - Is the relationship between telco provider and customer changing? - What things need to happen to make next generation services a reality? - You say you want the supplier to change. Do you want to change too? - What is Telecoms 2.0?

Publisher:
ZDNet UK

Telecom 2.0: Mind over matter

ntl:Telewest Business believes that the role of the telco is evolving. Gone are the days when it was enough to simply focus on circuits and minutes, customers now need a far higher degree of interaction and look for suppliers who will talk business solutions with them.

Publisher:
ntl:Telewest Business

IBM Information Server Change Data Capture

In today's fast-paced world, access to real-time data has never been more important. To be successful, organizations need to be able to report and analyze corporate data quickly and easily, regardless of what applications created the data, what platform they're running on, or what database they're stored in.

Publisher:
IBM

An examination of server consolidation: the trends that can drive efficiencies and help businesses gain a competitive edge

This white paper provides a starting point for organizations contemplating server consolidation. It includes an overview of server consolidation concepts and techniques and provides guidance on methodologies. It also looks at the potential cost savings associated with server consolidation and offers information on how organizations can sustain the advantage they have gained by consolidating their servers.

Publisher:
IBM

Also on silicon.com

Site Navigation:

Modems White Papers

Effects of Clipping on the Error Performance of OFDM in Frequency Selective Fading Channels

Quick Sitemap Links:

About Us

Search

Blogs

Verticals

Advertising Features

CNET Networks in Europe

CNET Networks in the United States

CNET Networks in Asia Pacific