On LDPC codes for Gaussian interference channels
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/27175
IEEE International Symposium on Information Theory - Proceedings
- Conference Paper 
Institute of Electrical and Electronics Engineers Inc.
In this paper, we focus on the two-user Gaussian interference channel (GIC), and study the Han-Kobayashi (HK) coding/decoding strategy with the objective of designing low-density parity-check (LDPC) codes. A code optimization algorithm is proposed which adopts a random perturbation technique via tracking the average mutual information. The degree distribution optimization and convergence threshold computation are carried out for strong and weak interference channels, employing binary phase-shift keying (BPSK). Under strong interference, it is observed that optimized codes operate close to the capacity boundary. For the case of weak interference, it is shown that via the newly designed codes, a nontrivial rate pair is achievable, which is not attainable by single user codes with time-sharing. Performance of the designed LDPC codes are also studied for finite block lengths through simulations of specific codes picked from the optimized degree distributions. © 2014 IEEE.
Showing items related by title, author, creator and subject.
The tradeoff between processing gains of an impulse radio UWB system in the presence of timing jitter Gezici, S.; Molisch, A.F.; Poor H.V.; Kobayashi H. (2007)In time hopping impulse radio, Nf pulses of duration Tc are transmitted for each information symbol. This gives rise to two types of processing gains: i) pulse combining gain, which is a factor Nf, and (ii) pulse spreading ...
Interference analysis of fixed terrestrial microwave LOS/NLOS radio links [Sabit Karasal Mikrodalga LOS/NLOS Radyo Linklerin Enterferans Analizi] Goktas P.; Topcu, S.; Karasan, E.; Altintas, A. (Institute of Electrical and Electronics Engineers Inc., 2015)In this study, interference modelling is investigated for fixed terrestrial microwave LOS (line-of-sight)/ NLOS (transhorizon) radio links operating in NATO Band 3+ (1350-2690 MHz) and NATO Band 4 (4400-5000 MHz) frequency ...
Tolea, M.; Moldoveanu V.; Dinu I.V.; Tanatar, B. (2012)The usual experimental set-up for measuring the wave function phase shift of electrons tunneling through a quantum dot (QD) embedded in a ring (i.e., the transmittance phase) is the so-called 'open' interferometer as first ...