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

Modems White Papers

Space-Frequency Coded MIMO-OFDM With Variable Multiplexing-Diversity Tradeoff

Overview Space-frequency coded Orthogonal Frequency Division Multiplexing (OFDM) is capable of realizing both spatial and frequency-diversity gains in multipath multiple-input multiple-output (MIMO) fading channels. This naturally leads to the question of variable allocation of the channel's degrees of freedom to multiplexing and diversity transmission modes. This paper provides a systematic method for the design of space-frequency codes with variable multiplexing-diversity tradeoffs. Simulation results illustrate the performance of the proposed codes.

Further White Paper Details
Publisher	Stanford University	File Format	PDF, requires Acrobat Rdr 5
Date Published	June 2003	Downloads	13
Format	White Papers
Topics	Modems

Did you find this white paper useful? 5 out of 9 users found this white paper useful

Peter Cochrane's Uncommon Sense: You wear it well

Only the allocation of unused frequency space, power limiting specifications to keep radio operation safe and interference free, and smart software. We will soon see bar codes on our clothing, driving licence, passport and credit card, replaced by...

Channel:
Comment & Analysis

Peter Cochrane's Uncommon Sense: Mobile guesses

Only the allocation of spare frequency space, power limiting specifications to keep radio operation safe and interference free, and some really smart self-organising software. Even the bar codes on our food and clothes look set to be replaced by...

Water-powered mobile phones a reality

The power generated from a single channel is extremely small - a 30 cm column of water will produce one-two microamps - but the researchers envisage millions of parallel channels being used to increase the power output to a level sufficient to...

Quocirca's Straight Talking: Say 'no' to walled gardens

The mobile incarnation of a fixed internet service, for example, will sometimes require a lot more in the way of sophisticated middleware to deal with limited and variable bandwidth, interrupted connections and the constrained display and input...

Peter Cochrane's Blog: The search for spectrum

Every time I look at the allocation of radio spectrum channels I go to a brightly coloured wall chart (see Fig 1 below) that gives the impression that it is a resource of great scarcity. This automatically leads you to a world of bands and channels...

It's not easy being green

The National Grid leads to further losses of nearly eight per cent of the remaining power through resistive heat dissipation, and further inefficiencies at substations and distribution to local points of usage account for yet more waste.

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

Space-Frequency Coded MIMO-OFDM With Variable Multiplexing-Diversity Tradeoff

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