Approximate Characterizations For the Gaussian Broadcasting Distortion Region Conference Paper uri icon


  • We consider the joint source-channel coding problem of sending a Gaussian source over a K-user Gaussian broadcast channel with bandwidth mismatch. A new outer bound to the achievable distortion region is derived using the technique of introducing more than one additional auxiliary random variable, which was previously used to derive sum-rate lower bound for the Gaussian multiple description problem. By combining this outer bound with the source-channel- separation-based achievable region, we provide approximate characterizations of the achievable distortion region within constant multiplicative factors. 2009 IEEE.

name of conference

  • 2009 IEEE International Symposium on Information Theory

published proceedings

  • 2009 IEEE International Symposium on Information Theory

author list (cited authors)

  • Tian, C., Diggavi, S. N., & Shamai, S.

citation count

  • 7

complete list of authors

  • Tian, Chao||Diggavi, Suhas N||Shamai, Shlomo

publication date

  • January 1, 2009 11:11 AM