A chart for the quantum mechanics of a particle of mass $m$ in a one-dimensional potential well o... more A chart for the quantum mechanics of a particle of mass $m$ in a one-dimensional potential well of width $w$ and depth $V_0$ is derived. The chart is obtained by normalizing energy and potential through multiplication by ${8 m}{h^2} / w^2$, and gives directly the allowed couples (potential, energy), providing insights on the relation between the parameters and the number of allowed energy levels.
GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record
The errors distribution for packet transmission over mobile radio systems employing slow frequenc... more The errors distribution for packet transmission over mobile radio systems employing slow frequency hopping (SFH) with non-ideal interleaving is studied. Then, a new analytical methodology is presented to evaluate automatic repeat request (ARQ) techniques, taking into account forward error correction (FEC) and non-ideally interleaved SFH over Rayleigh fading channels. The selective repeat (SR) ARQ and the type I hybrid ARQ/FEC techniques are compared when varying the number of bits per hop, so gradually passing from the non-interleaved non-SFH case to the perfect interleaved case. It is found that the use of SFH and/or interleaving deteriorates the efficiency of the transmission: in other words, when ARQ is applied to slow fading channels the best performance are obtained without SFH and interleaving. The ARQ/FEC technique analyzed gives marginal improvements with respect to pure SR only when perfect interleaving and SFH are applied
"This third edition reflects the latest advances in mobile communications. In particular, th... more "This third edition reflects the latest advances in mobile communications. In particular, the text expands coverage of wireless local area networks, low-speed wireless data, and wireless ATM. The book also addresses new standards for wireless LANs and high-speed broadband, as well as for wireless mesh networks, mobile ad hoc networks, and tandem connections of digital cellular, IEEE 802.11, and IEEE 8902.16 networks. The author also covers the development of very-short-distance wireless connectivity technologies, such as Bluetooth and ultrawideband technologies, along with the rise of third- and fourth-generation digital cellular systems and wireless multimedia communications"-
Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications
The problem of error control strategies in wireless multimedia networks adopting the ATM protocol... more The problem of error control strategies in wireless multimedia networks adopting the ATM protocol is addressed. In particular, we investigate the performance attainable by using a hybrid combination of automatic repeat request (ARQ) techniques and forward error correcting (FEC) codes for class C, connection oriented, non-delay critical and variable bit-rate services. To mitigate the wireless channel impairments we propose an
A chart for the quantum mechanics of a particle of mass $m$ in a one-dimensional potential well o... more A chart for the quantum mechanics of a particle of mass $m$ in a one-dimensional potential well of width $w$ and depth $V_0$ is derived. The chart is obtained by normalizing energy and potential through multiplication by ${8 m}{h^2} / w^2$, and gives directly the allowed couples (potential, energy), providing insights on the relation between the parameters and the number of allowed energy levels.
GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record
The errors distribution for packet transmission over mobile radio systems employing slow frequenc... more The errors distribution for packet transmission over mobile radio systems employing slow frequency hopping (SFH) with non-ideal interleaving is studied. Then, a new analytical methodology is presented to evaluate automatic repeat request (ARQ) techniques, taking into account forward error correction (FEC) and non-ideally interleaved SFH over Rayleigh fading channels. The selective repeat (SR) ARQ and the type I hybrid ARQ/FEC techniques are compared when varying the number of bits per hop, so gradually passing from the non-interleaved non-SFH case to the perfect interleaved case. It is found that the use of SFH and/or interleaving deteriorates the efficiency of the transmission: in other words, when ARQ is applied to slow fading channels the best performance are obtained without SFH and interleaving. The ARQ/FEC technique analyzed gives marginal improvements with respect to pure SR only when perfect interleaving and SFH are applied
"This third edition reflects the latest advances in mobile communications. In particular, th... more "This third edition reflects the latest advances in mobile communications. In particular, the text expands coverage of wireless local area networks, low-speed wireless data, and wireless ATM. The book also addresses new standards for wireless LANs and high-speed broadband, as well as for wireless mesh networks, mobile ad hoc networks, and tandem connections of digital cellular, IEEE 802.11, and IEEE 8902.16 networks. The author also covers the development of very-short-distance wireless connectivity technologies, such as Bluetooth and ultrawideband technologies, along with the rise of third- and fourth-generation digital cellular systems and wireless multimedia communications"-
Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications
The problem of error control strategies in wireless multimedia networks adopting the ATM protocol... more The problem of error control strategies in wireless multimedia networks adopting the ATM protocol is addressed. In particular, we investigate the performance attainable by using a hybrid combination of automatic repeat request (ARQ) techniques and forward error correcting (FEC) codes for class C, connection oriented, non-delay critical and variable bit-rate services. To mitigate the wireless channel impairments we propose an
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Papers by Marco Chiani