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Encyclopedia > Vahid Tarokh

Vahid Tarokh is a Persian Canadian scientist with fundamental contributions to telecommunication, specifically to signal processing for wireless communications. He received the PhD in Electrical Engineering from the University of Waterloo, Ontario, Canada in 1995.


Vahid Tarokh is responsible for a number of inventions. In particular, he is the principal inventor of space–time codes. This includes space-time trellis codes [1] [2], combined array processing and space-time coding [3], space-time block codes [4] and differential space-time codes [5]. He has also contributed to orthogonal frequency division multiplexing and distributed beamforming. A US patent with Siavash Alamouti (# 6,185,258) discloses a 2 transmit antenna space-time code that is widely adapted in various global standards. A space–time code (STC) is a method employed to improve the reliability of data transmission in wireless communication systems using multiple transmit antennas. ... Space–time trellis codes (STTCs) are a type of space-time code used in multiple-antenna wireless communications. ... Space–time block coding is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data-transfer. ... Differential space-time codes1,2 are a way of transmitting data in wireless communications. ... Orthogonal frequency division multiplexing (OFDM) is a method of digital modulation causing a signal to be split into several narrowband channels at differing frequencies. ... Siavash Alamouti is an Intel Fellow who is best known for the invention of the Alamouti space-time code disclosed jointly with Vahid Tarokh in the US patent (# 6,185,258) . Alamouti code is a 2 transmit antenna space-time block code and has been adapted in various global standards. ...


Tarokh has received a number of awards including the Governor General of Canada Aacdemic Gold Medal 1996 , the IEEE Information Theory Society Prize Paper Award 1999, The Alan T. Waterman Award 2001 and was selected as one of the Top 100 Inventors of Years (1999-2002) by the Technology Review Magazine. He holds honorary degrees from Harvard University (2002) and the University of Windsor, Ontario, Canada (2003). Harvard University is a private university in Cambridge, Massachusetts, USA and a member of the Ivy League. ...


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References

  1. ^ Vahid Tarokh, Nambi Seshadri, and A. R. Calderbank (March 1998). "Space–time codes for high data rate wireless communication: Performance analysis and code construction". IEEE Transactions on Information Theory 44 (2): 744–765. DOI:10.1109/18.661517.
  2. ^ Vahid Tarokh, Ayman Naguib, Nambi Seshadri and A. Robert Calderbank (February 1999). "Space–time codes for high data rate wireless communication: performance criteria in the presence of channel estimation errors, mobility, and multiple paths". IEEE Transactions on Communications 47 (2): 199–207. DOI:10.1109/26.752125.
  3. ^ Vahid Tarokh, Ayman Naguib, Nambi Seshadri and A. Robert Calderbank (May 1999). "Combined array processing and space-time coding". IEEE Transactions on Information Theory 45 (4): 1121–1128.
  4. ^ Vahid Tarokh, Hamid Jafarkhani, and A. R. Calderbank (July 1999). "Space–time block codes from orthogonal designs". IEEE Transactions on Information Theory 45 (5): 744–765. DOI:10.1109/18.771146.
  5. ^  V. Tarokh and H. Jafarkhani (July 2000). "A Differential Detection Scheme for Transmit Diversity". IEEE Journal on Selected Areas in Communications 18 (7). DOI:10.1109/49.857917.

 
 

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