Dr.Andrew Viterbi - Inventor of the famous Vitterbi Algorithm and Co-Founder of Qualcomm needs no introduction to those who are in the Wireless Communication arena.

Dr.Viterbi was very keen and interested in teaching.

So, a year after receiving his doctorate in 1962, he accepted an

invitation to become an assistant professor at the

University of California, Los Angeles. There, he

started teaching information theory and digital

communications. When it came to teaching the

problem of extracting digital signals out of noise,

the standard way of presenting the subject was

“complex and hard to teach,” Viterbi said. so he set about

trying to simplify the concepts “to teach the advanced

course in a better way.” After three months of concen-

trated thought, in March 1966 he figured out a simplified

solution.

Thrilled at having devised a powerful new teaching aid,

he wrote a paper (published in 1967 in IEEE Transactions

on Information Theory) that frst expressed what is now

called the Viterbi algorithm, for teasing a faint digital signal

out of strong noise . But a colleague pointed

out that the algorithm—if it could be implemented in hard-

ware—also had powerful practical application in improving

the actual performance of communication systems. In fact,

it was so powerful that engineers using it for missiles,

spacecraft tracking, or cellular telephones could pick from

a wonderful smorgasbord of choices: reducing transmitter

power, reducing receiving-antenna diameter, extending the

range of a transmitter, operating in a jammed environment,

or increasing the number of users supported in a cellular

system.

And therein lay the fundamental secret of the Viterbi

algorithm’s long, fruitful application in so many industries.

Excerpts from The Quiet Genius: Andrew J. Viterbi by Trudy e. bell

Dr.Viterbi was very keen and interested in teaching.

So, a year after receiving his doctorate in 1962, he accepted an

invitation to become an assistant professor at the

University of California, Los Angeles. There, he

started teaching information theory and digital

communications. When it came to teaching the

problem of extracting digital signals out of noise,

the standard way of presenting the subject was

“complex and hard to teach,” Viterbi said. so he set about

trying to simplify the concepts “to teach the advanced

course in a better way.” After three months of concen-

trated thought, in March 1966 he figured out a simplified

solution.

Thrilled at having devised a powerful new teaching aid,

he wrote a paper (published in 1967 in IEEE Transactions

on Information Theory) that frst expressed what is now

called the Viterbi algorithm, for teasing a faint digital signal

out of strong noise . But a colleague pointed

out that the algorithm—if it could be implemented in hard-

ware—also had powerful practical application in improving

the actual performance of communication systems. In fact,

it was so powerful that engineers using it for missiles,

spacecraft tracking, or cellular telephones could pick from

a wonderful smorgasbord of choices: reducing transmitter

power, reducing receiving-antenna diameter, extending the

range of a transmitter, operating in a jammed environment,

or increasing the number of users supported in a cellular

system.

And therein lay the fundamental secret of the Viterbi

algorithm’s long, fruitful application in so many industries.

Excerpts from The Quiet Genius: Andrew J. Viterbi by Trudy e. bell