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| Full Name | Dr Rk Sethi |
| Organization | |
| Job Title | Researcher |
| Country |
Forum Replies Created
“A very long time.
It was a great success, but even great successes come to a natural end.”
Hoping for the BEST to come……
Congratulation Dear Alistu,
Congratulations for earning the $600 Gift Certificate!
You are the most active participant of the Forum.
Thanks for your tremendous contribution!
BEST Regards,
Dr Rk Sethi
Abhishek Sharma Hi,
Welcome Dear. You are also doing good job.
We request EXPERIENCED members to contribute to questions which need expert comments.
KEEP SHARING. Sharing your knowledge with others does not make you less important.
If you have knowledge, let others light their candles in it. Margaret Fuller (1810-1850, Journalist, Critic and Women’s Rights Activist)
A candle losses nothing by lighting another candle. Father James Keller. (1900-1977, Roman Catholic priest)
Hope to have good sharing among the FORUM members.
Regards.
Gaurav Rajarya Hi,
The integration of PDM with QPSK seems to be reliable solutions to achieve longer reach, larger capacity, and higher spectral efficiency. QPSK can be generated with comparatively low complexity. Please have a look at the following forum link:
http://staging.optiwave.com/forums/topic/pdm-qpsk/
The following application link shows design of a 100 Gbps DP-QPSK transmission system using coherent detection with DSP:
What components are you searching?
Regards.
Sethi Rk
THANKS A LOT “OPTIWAVE and Bryan Tipper”
Being an active member of the FORUM is much more valuable than the Gifts.
Regards.
Sethi Rk
Hi Abhishek Shrama,
Please have a look at:
http://staging.optiwave.com/forums/topic/writing-research-paper-which-formate-should-i-follow/
Congratulation Dear Members,
All the winner members are active participant of the Forum. Actively asking questions and solving problems / difficulties of the members. I think the present scheme of awarding points is better than conducting weekly / monthly draws where only 1 person gets the prize. Optiwave gives every forum member a chance to win through their participation. These scheme permits the forum members to get prizes i.e. Gift coupons in the exchange of the knowledge.
What an Idea Sir!
If anybody have any specific question and difficulty, please search the key words at forum home:
http://staging.optiwave.com/forums/,
you may find answer there; otherwise make a new topic and forum members will help you.
Regards.
Sethi Rk
Hi Deepanshu Sharma,
Downloaded the article from the link.
From the article:
New speed for the signal
We now effectively deal with two different speeds.
First is the bit rate ftx, measured in bits per second, also referred to as “transmission rate.”
Second, we define the symbol rate S that quantifies the number of symbols transmitted per second,
With the coding efficiency in bits/symbol: e = log2 (number of symbols in alphabet),
the symbol rate calculates as: the bit rate ftx measured in bits per second / the coding efficiency in bits/symbol
The minimum optical bandwidth required by the signal (in Hz) is determined by dividing the symbol rate by 2.
Therefore, the bandwidth required by complex modulated signals doesn’t depend on the data rate but only on the symbol rate.
That also means the more bits encoded into one symbol at a given data rate, the greater the reduction in occupied optical bandwidth.
So, there is not any affect of DD method on the spectral efficiency.
Regards.
Sethi Rk
Welcome Anamika Basnotra, Sam Sung and Abdullah Baig.
Please don’t forget to inform through Forum or e-mail whenever paper published.
Best of luck.
Regards.
Sethi Rk
drsethirk@gmail.com
Esakkimuthu Hi,
Yes, MOST of the plagiarism detector are not free.
Some of the FREE version you can find on the net but they have limited options, because of the limitation imposed on the same.
Here is a link for plagiarism checker “top-10-free-plagiarism-detection-tools-for-teachers”
Anti-Plagiarism
DupliChecker
Paper Rater
Plagiarisma
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Plagium
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Plagiarism Detector
http://elearningindustry.com/top-10-free-plagiarism-detection-tools-for-teachers
Hi Mohamed Ajina,
You can use Multi-mode fiber. It depends on the application.
Normally, Multimode fiber will permit short transmission distances of up to about 10 miles and will permit the use of comparatively inexpensive fiber optic communication transmitters and receivers. It will be bandwidth limitations of a few hundred MHz per Km of length. On the other hand, SMF may be used for the transmission distance in excess of 10 miles but will need the use of Laser transmitters. The equipment for single mode transmission more expensive as compared to multimode equipment.
Information carrying capacity = BW *Length
MMSI 20MHz.Km
MMGI 1GHz.Km
SMSI 100GH.Km
For more information you can refer:
Fiber-Optic Communication Systems, 4th Edition. Govind P. Agrawal
Hi Abhishek,
Welcome Dear.
Regards.
Abhishek Shrama Hi,
The X – axis parameters are not readable in the attached plots.
Hi Anamika Basnotra,
Providing a list of suggested or preferred reviewers will definitely quicken the process, because Journals are always short of reviewers.
Some authors send names of friends, who they think may be favourable as reviewers from the list of people with sufficient expertise. But these people are unlikely to be chosen to review the manuscript. Finally the editor has to choose the reviews obtained for any given manuscript and determine whether or not they are fair and thorough. The best suggestion is to not avoid mentioning names but pick names that in your opinion can provide good constructive review on your work and not just favourable. Our goal should not be to get our work published; instead it should be to make sure that whatever publishes is the best. If we adopt that approach, then only we will suggest reviewers who have the requisite expertise, regardless of what bias they might hold.
There are three types of editors:
– Some editors may be busy / sluggish people just take names and send the paper to them for review.
– Others think that you provide the list of the favourable people who will likely endorse your paper for non-existent merits, and never send requests to these people.
– These people rely less and less on these suggestions and look upon them with suspicion and make selections from their own wisdom, understanding and research on the topic.
Deepanshu sharma Hi,
Can you attach complete paper. From the snap shot it is showing coding efficient 1 bit / symbol, spectral efficiency .5 bits/sec/Hz.
The spectral efficiency of a digital communication system is measured in bit/s/Hz. It is the net bitrate (useful information rate excluding error-correcting codes) or maximum throughput divided by the bandwidth in hertz of a communication channel.
It can also be measured in bit/symbol, showing the net bit rate divided by the symbol rate.