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Scientists hit record-breaking 26Tbps by laser

A group of researchers has broken transmission records by sending 26Tbps of data over 50km in a second, carried on a single laser beam via fibre cable Read more

24 May, 2011 by Jack Clark
Learning-Based Spectrum Sensing in <endeca_term>OFDM</endeca_term> Cognitive Radios

Learning-Based Spectrum Sensing in OFDM Cognitive Radios

In this paper, spectrum sensing in OFDM-based cognitive radio systems is modeled as a pattern recognition problem. The... Read more

25 April, 2012
Dual-Lag Correlation-Based Feature Detection of <endeca_term>OFDM</endeca_term> Signals With Cyclic Phase Compensation

Dual-Lag Correlation-Based Feature Detection of OFDM Signals With Cyclic Phase Compensation

This paper presents cyclostationarity-based spectrum sensing algorithm implementation for detection of OFDM signals. The detector utilizes two distinct auto-correlation delays and introduces compensation... Read more

25 April, 2012
Partial Shift Mapping for PAPR Reduction With Low Complexity in <endeca_term>OFDM</endeca_term> Systems

Partial Shift Mapping for PAPR Reduction With Low Complexity in OFDM Systems

...high peak-to-average power is one of the main drawbacks in OFDM systems. This paper proposes a Partial Shift Mapping (PSM) method for peak... Read more

1 April, 2012
Space Frequency Coded <endeca_term>OFDM</endeca_term>

Space Frequency Coded OFDM

The authors are going to implement and study a space frequency coded OFDM system which consists of two transmitters and a single receiver. Simple Alamouti... Read more

1 April, 2012
Improving Channel Estimation Accuracy in <endeca_term>OFDM</endeca_term> System Using MATLAB Simulation

Improving Channel Estimation Accuracy in OFDM System Using MATLAB Simulation

This paper is to improve channel estimation accuracy in OFDM system because channel state information is required for signal detection at receiver... Read more

1 April, 2012
BER Analysis of CDMA, <endeca_term>OFDM</endeca_term> & UVW System Using SIMULINK

BER Analysis of CDMA, OFDM & UVW System Using SIMULINK

CDMA (Code Division Multiple Access), OFDM (Orthogonal Frequency Division Multiplexing) and UWB (Ultra Wide Band) are t h... Read more

23 March, 2012
Mean Square Error Performance of <endeca_term>OFDM</endeca_term> Systems Against Signal to Noise Ratio Under Different Fading Channels

Mean Square Error Performance of OFDM Systems Against Signal to Noise Ratio Under Different Fading Channels

The well known problem in an Orthogonal Frequency Division Multiplexing (OFDM) system is its sensitivity to frequency offset. Most of the coherent OFDM... Read more

1 March, 2012
Performance Evaluation of an <endeca_term>OFDM</endeca_term> System Under Rayleigh Fading Environment

Performance Evaluation of an OFDM System Under Rayleigh Fading Environment

The performance of an OFDM system is affected by parameters such as carrier frequency offset and phase... Read more

1 March, 2012
Analysis of <endeca_term>OFDM</endeca_term> BER and PAPR Using TURBO CODE

Analysis of OFDM BER and PAPR Using TURBO CODE

The principles of Orthogonal Frequency Division Multiplexing (OFDM) modulation have been in existence for several decades. However, in recent years... Read more

1 March, 2012
Verification for PAPR Reduction of <endeca_term>OFDM</endeca_term> Signal Using Partial Transmit Sequences Technique

Verification for PAPR Reduction of OFDM Signal Using Partial Transmit Sequences Technique

In this paper, the authors propose an algorithm for PAPR reduction in OFDM systems, based on a Partial Transmit Sequence Technique. In this present work... Read more

16 February, 2012
Implementation of FNT Processor for <endeca_term>OFDM</endeca_term>-Based Communication System

Implementation of FNT Processor for OFDM-Based Communication System

Orthogonal Frequency Division Multiplexing (OFDM) is becoming the chosen modulation technique for wireless communications. OFDM can provide... Read more

1 February, 2012
Training Based Channel Estimation in MIMO-<endeca_term>OFDM</endeca_term> Systems

Training Based Channel Estimation in MIMO-OFDM Systems

OFDM combined with the MIMO technique has become a core and attractive technology... Read more

1 February, 2012
On Transmission Performance of <endeca_term>OFDM</endeca_term>-Based Schemes Using MMSE-FDE in a Frequency selective Fading Channel

On Transmission Performance of OFDM-Based Schemes Using MMSE-FDE in a Frequency selective Fading Channel

There has been greatly increasing interest in Orthogonal Frequency Division Multiplexing (OFDM) for broadband wireless transmission due to its robustness against multipath fading. However... Read more

10 January, 2012
Bit Error Probability of Cooperative Diversity for M-ary QAM <endeca_term>OFDM</endeca_term>-Based System With Best Relay Selection

Bit Error Probability of Cooperative Diversity for M-ary QAM OFDM-Based System With Best Relay Selection

Cooperative relay networks in OFDM-based systems have been shown to improve performance in wireless communication systems... Read more

1 January, 2012

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BrownieBoy

"cites" even. Ouch!

7 hours ago by BrownieBoy on Using Windows XP is a waste of money, says IDC
Horace Ontalhold

...... and PDP11s too

7 hours ago by Horace Ontalhold on Fusion-io lays minefield with a billion IOPS
BrownieBoy

I had a quick skim through the PDF. It seems to be that many of these so-called cost savings would be down to a hardware refresh. Although...

8 hours ago by BrownieBoy on Using Windows XP is a waste of money, says IDC
bobandroid

496,999 BT Fon Hotspots lovingly situated in your next door neighbours garden, no matter how you dress that up its still a pup... Not where I need...

10 hours ago by bobandroid on London Olympics: BT needs 25,000 more Wi-Fi hotspots
apexwm

Jack : I was hoping you could provide us a summary since you are familiar with this report. I am not yet sure how much of my time I'd like to...

12 hours ago by apexwm on Using Windows XP is a waste of money, says IDC
Smilig Eddie

2 – 4 more weeks of waiting: how many buyers are going to decide instead to see what the iPhone 5 offers? Consumer trust in the brand has also...

12 hours ago by Smilig Eddie on Samsung Galaxy 'S3' delayed by special paint
SRist

So it looks like this was a complete red herring - Adobe are allowing upgrades from Photoshop CS3, CS4 and CS5 at the same price. When did this...

13 hours ago by SRist on Photoshop users attack Adobe upgrade policy change
Jack Schofield

@apexwm Have you considered either (a) reading the story above or (b) reading the PDF? There are answers in both.

15 hours ago by Jack Schofield on Using Windows XP is a waste of money, says IDC
apexwm

I would love to hear why Microsoft believes that "upgrading from Windows XP to Windows 7 pays for itself in a year, in increased productivity and...

15 hours ago by apexwm on Using Windows XP is a waste of money, says IDC
debsmk

I have just changed mine to white they said 3 to 5 days

16 hours ago by debsmk on Samsung Galaxy 'S3' delayed by special paint
Atangana

I would like a job for me and do good to their tackiness vellent my help I will do my best to help you mercie for all

17 hours ago by Atangana on UK's 15-year-old World Excel champion offered £100k job
BrownieBoy

Well done to IDC for producing a report that says using XP is a waste of money. Only 11 years too late with it is all....

18 hours ago by BrownieBoy on Using Windows XP is a waste of money, says IDC
Jack Schofield

@Burn-IT ...which doesn't mean it isn't true ;-) I'll be interested if you can find any properly-researched, independent data from any of the...

19 hours ago by Jack Schofield on Using Windows XP is a waste of money, says IDC
Burn-IT

As said, sponsored by Microsoft........

20 hours ago by Burn-IT on Using Windows XP is a waste of money, says IDC
mrbigdong

@620W, I mine 1 BTC/daily for cost of 1.7eur, they naysayers regurgitate the rubbish they read as usual

20 hours ago by mrbigdong on A minor Bitcoin miner injury?
Mike Denton

If the link to the next section existed that would be awesome.... Guess I have to ask uncle google where it is

1 day ago by Mike Denton via Facebook on Security on the farm: Accounts and permissions
minzhu

Don't blame CEO, they want RIM win. RIM has strange culture and self distruct political environment. In RIM if a new hired person figure out...

1 day ago by minzhu on RIM CEO: Time to squash BlackBerry myths
Thomas Gellhaus

I've been very pleased with Mageia 2. My review went up on Sunday. My only issue is that my particular wireless printer hasn't been detected on...

1 day ago by Thomas Gellhaus via Facebook on Scorecard - Linux Mint 13 and Mageia 2
knapper

That we have :-) Retailers don't buy stuff to lie around in warehouses, particularly with fast moving technology products. If they didn't think...

1 day ago by knapper on Windows Phone, Android take bite out of BlackBerry
JohneKerr

I think that we have been here before, shipments are not equal to sales. Correct?

1 day ago by JohneKerr on Windows Phone, Android take bite out of BlackBerry