6 papers
Lossy Joint Source-Channel Coding over Unknown Channels
Adeel Mahmood, Harish Viswanathan, Jinfeng Du
We analyze the performance of joint source-channel codes in an unknown-channel framework, where the true channel is unknown but the source distribution is known. We derive achievab…
Weighted Unequal Error Protection over a Rayleigh Fading Channel
Adeel Mahmood
We study a variant of unequal error protection in channel coding, where the message bit string is divided into a finite number of blocks and the maximization objective is a weighte…
Channel Coding for Gaussian Channels with Multifaceted Power Constraints
Adeel Mahmood, Aaron B. Wagner
Through refined asymptotic analysis based on the normal approximation, we study how higher-order coding performance depends on the mean power as well as on finer statistics of the…
Channel Coding for Gaussian Channels with Mean and Variance Constraints
Adeel Mahmood, Aaron B. Wagner
We consider channel coding for Gaussian channels with the recently introduced mean and variance cost constraints. Through matching converse and achievability bounds, we characteriz…
Improved Channel Coding Performance Through Cost Variability
Adeel Mahmood, Aaron B. Wagner
Channel coding for discrete memoryless channels (DMCs) with mean and variance cost constraints has been recently introduced. We show that there is an improvement in coding performa…
Channel Coding with Mean and Variance Cost Constraints
Adeel Mahmood, Aaron B. Wagner
We consider channel coding for discrete memoryless channels (DMCs) with a novel cost constraint that constrains both the mean and the variance of the cost of the codewords. We show…