Dear subscribers of the colloquium newsletter,

we are happy to inform you about the next date of our Communication Technology Colloquiums.

Friday, September 10, 2021
Speaker: Rocio Martin Lima
Time: 11:00 a.m.
Location: https://rwth.zoom.us/j/97904157921?pwd=SWpsbDl0MWhrWjY1ZkZaeFRoYmErZz09

                    Meeting-ID: 979 0415 7921
                    Passwort: 481650

Master Lecture: Optimized Receiver Systems Preserving Maximum Relevant Mutual Information

In modern communication systems the receiver-sided signal processing often results in bottlenecks. In particular, high-speed computations in channel decoders are demanding, but also crucial to achieve high data rates. Therefore, reduced complexity decoding algorithms for the widely used low-density parity-check (LDPC) codes are developed in this thesis. State-of-the-art LDPC decoders use costly mathematical operations and high-precision log-likelihood ratios in iterative message passing algorithms. Both typically results in high decoder complexity.

In contrast, this thesis proposes to design check node operations that decode directly using the bit-level representation of strongly quantized integer messages. Like this, small logical circuits that only use simple bit-level operations (e.g. XOR) on the passed messages can replace demanding check node operations. At the same time, only a small number of bits per message is required. An information bottleneck inspired design method is applied to learn suitable logical circuits for decoding. This method involves genetic optimization algorithms.

All interested parties are cordially invited, registration is not required.

General information on the colloquium, as well as a current list of dates of the Communication Technology Colloquium can be found at:
https://www.iks.rwth-aachen.de/aktuelles/kolloquium

-- 
Irina Ronkartz
Institute of Communication Systems (IKS)
RWTH Aachen University
Muffeter Weg 3a, 52074 Aachen, Germany
+49 241 80 26958 (phone)
ronkartz@iks.rwth-aachen.de
http://www.iks.rwth-aachen.de/