Support Vibha’s Dream Mile event

My friend Mr. Balaji volunteers for Vibha, a non-profitĀ  organization whose mission is to ensure that every underprivileged child attains his or her right to education, health and opportunity.

Vibha, which was founded in 1991 has a volunteer network of 825 members spread across Atlanta, Austin, Bay Area, Boston, Chicago, Dallas, Houston, Jacksonville, Los Angeles, Milwaukee, Twin Cities – Minnesota, New York, Philadelphia, Sacramento, Washington DC and several other cities across the US and India. Till date, we have supported about 190 projects in India and the US. You may read more about their projects here.

To support Vibha’s cause, Mr Balaji has set up a donation page – The Dream Mile … A few miles for a million dreams . The Dream Mile 5k/10k Run/Walk is Vibha’s flagship event for increasing awareness and raising funds to help underprivileged children. Vibha has chosenĀ  My New Red Shoes as one of the beneficiaries of this event.

To find out more about My New Red Shoes, please watch the video below.

To find out more about Alamb, a project by Vibha in India, please watch the video below.

If you like some of the work done by Vibha, please consider making a donation to the cause. As Mr. Balaji has mentioned:

$120 can provide education to a child for a whole year

$50 can facilitate the rehabilitation of a mentally handicapped child for a year

$40 can sponsor the non-formal education of a child for a whole year.

To donate for this cause, please visit the donation page The Dream Mile … A few miles for a million dreams

Thanks again for your support.

MSK transmitter and receiver

In a post on Minimum Shift Keying (MSK), we had discussed that MSK uses two frequencies which are separated by and phase discontinuity is avoided in symbol boundaries. In that post, we had discussed MSK as a continuous phase transmit signal and showed that phase changes through 0, 90, 180 and 270 degrees. In this post, we will discuss MSK transmission as a variant of offset-QPSK technique. Further, we will discuss the receiver structure and show that bit error rate with coherent demodulation of MSK (using time) is equivalent to that of BPSK modulation. The channel assumed is AWGN.

Continue reading “MSK transmitter and receiver”