4 papers · 1 filter
On the Fluctuations of the Single-Letter -Tilted Sum for Binary Markov Sources
Bhaskar Krishnamachari
We study the source-side single-letter -tilted sum for a stationary binary Markov chain under Hamming distortion, induced by the single-letter Blahut--Arimoto operating point co…
From Gaussian Fading to Gilbert-Elliott: Bridging Physical and Link-Layer Channel Models in Closed Form
Bhaskar Krishnamachari, Victor Gutierrez
Dynamic fading channels are modeled at two fundamentally different levels of abstraction. At the physical layer, the standard representation is a correlated Gaussian process, such…
Target-Rate Least-Squares Power Allocation over Parallel Channels
Bhaskar Krishnamachari
We study power allocation over parallel Gaussian channels, such as OFDM subcarriers, when each channel has a desired target spectral efficiency. Given channel gain-to-noise coe…
Finite Block Length Rate-Distortion Theory for the Bernoulli Source with Hamming Distortion: A Tutorial
Bhaskar Krishnamachari
Lossy data compression lies at the heart of modern communication and storage systems. Shannon's rate-distortion theory provides the fundamental limit on how much a source can be co…