for Channels With Memory (2008)
Dieter M. Arnold, Hans-andrea Loeliger, Pascal O. Vontobel, Ar Kavčić, Senior Member, Wei Zeng, ...
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Error Exponents for Finite-Hypothesis Channel Identification (2008)
Patrick Mitran, Student Member, Ar Kavčić
We consider the problem of designing optimal probing signals for finite-hypothesis testing. Equiva-lently, we cast the problem as the design of optimal channel input sequences for identifying a...
Lower Bounds, Dieter Arnold, Ar Kavčić, Hans-andrea Loeliger, Pascal O. Vontobel, Wei Zeng
It has recently become feasible to compute information rates of finite-state source/channel models with not too many states. Such methods can also be used to compute upper and lower bounds on the...
Sum-Product Algorithm and Feedback Capacity (2007)
In this paper, we explore the link between the sum-product algorithm and the feedback capacity of a channel with memory. We show that the optimal (i.e., capacity-achieving) feedback is captured by...
Matched information rate codes for partial response channels (2005)
Ar Kavčić, Xiao Ma, Nedeljko Varnica
In this paper we design capacity-approaching codes for partial response channels. The codes are constructed as concatenations of inner trellis codes and outer low-density parity-check (LDPC) codes....
Pipelined parallel architectures for high throughput MAP detectors (2004)
Ruwan Ratnayake, Gu-yeon Wei, Ar Kavčić
A maximum a posteriori probability (MAP) detector based on a forward only algorithm with high throughput is considered in this paper. MAP gives the optimal performance and, with Turbo decoding, can...
Shaohua Yang, Ar Kavčić, Sekhar Tatikonda
We consider a finite-state machine channel with a finite memory length (e.g., finite length intersym-bol interference channels with finite input alphabets – also known as partial response...
Ar Kavčić, Xiao Ma, Michael Mitzenmacher
Abstract—We study the limits of performance of Gallager codes (low-density parity-check (LDPC) codes) over binary linear intersymbol interference (ISI) channels with additive white Gaussian noise...
The Power Spectra of Good Codes for Partial Response Channels,”accepted for (2003)
Xiao Ma, Ar Kavčić, Michael Mitzenmacher, I. Extended Summary
Recently, a serial concatenation coding scheme was proposed to approach the capacity of a partial response (PR) channel [1]. The design of the inner trellis code (named a matched information rate...
Correlation-sensitive adaptive sequence detection (1998)
Abstract — In high density magnetic recording, noise samples corresponding to adjacent signal samples are heavily correlated as a result of front-end equalizers, media noise, and signal...