Rodolfo Feick - Academia.edu (original) (raw)
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Papers by Rodolfo Feick
conference, Dec 1, 2006
In this paper we consider hybrid automatic repeat request transmission based on binary phase shif... more In this paper we consider hybrid automatic repeat request transmission based on binary phase shift keying modulation. Our objective is to improve the performance of the retransmissions, keeping at the same time the complexity and the performance of the first transmission unaltered. We conclude that the so-called mapping rearrangement (MR) may considerably improve the performance if multidimensional modulation is applied. We evaluate the theoretical limits of bit-interleaved coded modulation with MR, verify the functioning of the practical coding scheme, and propose to improve the performance via iterative detection-decoding (BICM-ID) which brings considerable gains. In particular, for high coding rates, a 4 dB SNR gain over transmission without MR may be achieved.
Microwave and Optical Technology Letters, 2004
Proceedings of the Twenty-Third International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing
2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC)
Abstract—In this paper, we evaluate the bit error rate (BER) of bit-interleaved coded modulation ... more Abstract—In this paper, we evaluate the bit error rate (BER) of bit-interleaved coded modulation (BICM) receivers that operate with aprioriinformation obtained from the decoder during the socalled turbo iterations. We use Bonferroni-type lower and upper bounds to tightly estimate the BER performance in the range of signal-to-noise ratio (SNR) of interest. The results are shown to be useful for the convergence analysis of the iterative demapping via the so-called extrinsic information transfer (EXIT) charts and for the evaluation of the coded performance of BICM with iterative demapping (BICM-ID). Index Terms—BICM with iterative demapping (BICM-ID), bit-interleaved coded modulation (BICM), Bonferroni bounds, iterative demapping, turbo decoding, turbo demapping. I.
IEEE Wireless Communications Letters, 2020
Fixed wireless access is becoming a major 5G application. We measured received power for 72 urban... more Fixed wireless access is becoming a major 5G application. We measured received power for 72 urban fixed wireless links at 5.8 GHz over a period of 48 hours each. We find that 5-minute power averages show temporal variations requiring additional fade margins close to 6 dB at the 90th percentile. The average power temporal variation was found to increase with the excess path loss of the link. We propose a model that accurately characterizes first and second order link statistics. Spatial and frequency diversity measurements allowed us to also assess the effectiveness of the corresponding fade mitigation techniques. From them we conclude that the long-term fades appear to be consistent with time-varying multipath propagation, as opposed to shadowing.
Proceedings of the 3rd ACM Workshop on Millimeter-wave Networks and Sensing Systems - mmNets'19, 2019
IEEE Transactions on Antennas and Propagation, 2020
IEEE Wireless Communications Letters, 2017
IEEE Transactions on Wireless Communications, 2016
Revista Facultad de Ingeniería - Universidad de Tarapacá, 2005
IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007
Microwave and Optical Technology Letters, 2010
International Journal of Infrared and Millimeter Waves, 2007
IEEE Transactions on Wireless Communications, 2011
IEEE Transactions on Communications, 2009
IEEE Transactions on Antennas and Propagation, 2003
IEEE Transactions on Antennas and Propagation, 2019
conference, Dec 1, 2006
In this paper we consider hybrid automatic repeat request transmission based on binary phase shif... more In this paper we consider hybrid automatic repeat request transmission based on binary phase shift keying modulation. Our objective is to improve the performance of the retransmissions, keeping at the same time the complexity and the performance of the first transmission unaltered. We conclude that the so-called mapping rearrangement (MR) may considerably improve the performance if multidimensional modulation is applied. We evaluate the theoretical limits of bit-interleaved coded modulation with MR, verify the functioning of the practical coding scheme, and propose to improve the performance via iterative detection-decoding (BICM-ID) which brings considerable gains. In particular, for high coding rates, a 4 dB SNR gain over transmission without MR may be achieved.
Microwave and Optical Technology Letters, 2004
Proceedings of the Twenty-Third International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing
2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC)
Abstract—In this paper, we evaluate the bit error rate (BER) of bit-interleaved coded modulation ... more Abstract—In this paper, we evaluate the bit error rate (BER) of bit-interleaved coded modulation (BICM) receivers that operate with aprioriinformation obtained from the decoder during the socalled turbo iterations. We use Bonferroni-type lower and upper bounds to tightly estimate the BER performance in the range of signal-to-noise ratio (SNR) of interest. The results are shown to be useful for the convergence analysis of the iterative demapping via the so-called extrinsic information transfer (EXIT) charts and for the evaluation of the coded performance of BICM with iterative demapping (BICM-ID). Index Terms—BICM with iterative demapping (BICM-ID), bit-interleaved coded modulation (BICM), Bonferroni bounds, iterative demapping, turbo decoding, turbo demapping. I.
IEEE Wireless Communications Letters, 2020
Fixed wireless access is becoming a major 5G application. We measured received power for 72 urban... more Fixed wireless access is becoming a major 5G application. We measured received power for 72 urban fixed wireless links at 5.8 GHz over a period of 48 hours each. We find that 5-minute power averages show temporal variations requiring additional fade margins close to 6 dB at the 90th percentile. The average power temporal variation was found to increase with the excess path loss of the link. We propose a model that accurately characterizes first and second order link statistics. Spatial and frequency diversity measurements allowed us to also assess the effectiveness of the corresponding fade mitigation techniques. From them we conclude that the long-term fades appear to be consistent with time-varying multipath propagation, as opposed to shadowing.
Proceedings of the 3rd ACM Workshop on Millimeter-wave Networks and Sensing Systems - mmNets'19, 2019
IEEE Transactions on Antennas and Propagation, 2020
IEEE Wireless Communications Letters, 2017
IEEE Transactions on Wireless Communications, 2016
Revista Facultad de Ingeniería - Universidad de Tarapacá, 2005
IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007
Microwave and Optical Technology Letters, 2010
International Journal of Infrared and Millimeter Waves, 2007
IEEE Transactions on Wireless Communications, 2011
IEEE Transactions on Communications, 2009
IEEE Transactions on Antennas and Propagation, 2003
IEEE Transactions on Antennas and Propagation, 2019