You are here: silicon.com > Resources > White Papers > Networking and Communications > Mobile and Wireless > Wireless LAN

Wireless LAN White Papers

Optimal Training Signals for MIMO OFDM Channel Estimation

Overview This paper presents general classes of optimal training signals for the estimation of frequency-selective channels in MIMO OFDM systems. Basic properties of the discrete Fourier transform are used to derive the optimal training signals which minimize the channel estimation mean square error. Both single and multiple OFDM training symbols are considered. Several optimal pilot tone allocations across the transmit antennas are presented and classified as frequency-division multiplexing, time-division multiplexing, code-division-multiplexing in the frequency-domain, code-division multiplexing in the time-domain, and combinations thereof. All existing optimal training signals in the literature are special cases of the presented optimal training signals and the designs can be applied to pilot-only schemes as well as pilot-data-multiplexed schemes.

Further White Paper Details
Publisher	Institute of Electrical and Electronics Engineers	File Format	PDF
Date Published	August 2005
Format	White Papers
Topics	Wireless LAN, Mobile - Wireless Communications, Training and Certification

Did you find this white paper useful? 3 out of 5 users found this white paper useful

Intel Case Study: Strix Systems Access/One Network

Publisher:
Intel

802.11n Access Points and Power over Ethernet: Key Considerations

Publisher:
Siemens

Practical Considerations for deploying 802.11n whitepaper

Publisher:
Siemens

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

Publisher:
UniversitÃ¤t Ulm

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

Publisher:
Motorola

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

ADSL trialists angered by BT pilot schemes

Trial users of BT's ADSL service in London have reacted angrily to the telco's decision to add £20 to the subscription fee and cut the available bandwith to one quarter of its original speed. Silicon.com has been flooded with complaints since BT...

Channel:
SME Director

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.

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:

Wireless LAN White Papers

Optimal Training Signals for MIMO OFDM Channel Estimation

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