Time diversity CDMA scheme employing orthogonal modulation for time varying channels

Shuji Kubota; Shuzo Kato; Kamilo Feher

Time diversity CDMA scheme employing orthogonal modulation for time varying channels

Shuji Kubota, Shuzo Kato, Kamilo Feher

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In order to increase the channel capacity of CDMA (Code Division Multiple Access) mobile and personal communication systems, a new time diversity CDMA scheme that employs orthogonal modulation is proposed. The time diversity CDMA scheme with orthogonal modulation reduces the required Eb/(No + Io) by 5dB at Pe = 10^-2 in Rayleigh fading environments with fDT (the product of Doppler frequency and one symbol duration) values ranging from 0.002 to 0.02. This improvement in required Eb/(No + Io) significantly increases the channel capacity of CDMA communication systems that have time varying channels. In addition, the computer simulation results show that the required time delay values of the time diversity scheme are reasonably short (20-100 symbols for 10kbps transmission) for fDT values ranging from 0.002 to 0.02.

Original language	English
Title of host publication	IEEE Vehicular Technology Conference
Publisher	Publ by IEEE
Pages	444-447
Number of pages	4
ISBN (Print)	078031266X
Publication status	Published - 1993 Jan 1
Event	Proceedings of the 43rd IEEE Vehicular Technology Conference - Secaucus, NJ, USA Duration: 1993 May 18 → 1993 May 20

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	0740-0551

Other

Other	Proceedings of the 43rd IEEE Vehicular Technology Conference
City	Secaucus, NJ, USA
Period	93/5/18 → 93/5/20

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ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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Kubota, S., Kato, S., & Feher, K. (1993). Time diversity CDMA scheme employing orthogonal modulation for time varying channels. In IEEE Vehicular Technology Conference (pp. 444-447). (IEEE Vehicular Technology Conference). Publ by IEEE.

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abstract = "In order to increase the channel capacity of CDMA (Code Division Multiple Access) mobile and personal communication systems, a new time diversity CDMA scheme that employs orthogonal modulation is proposed. The time diversity CDMA scheme with orthogonal modulation reduces the required Eb/(No + Io) by 5dB at Pe = 10-2 in Rayleigh fading environments with fDT (the product of Doppler frequency and one symbol duration) values ranging from 0.002 to 0.02. This improvement in required Eb/(No + Io) significantly increases the channel capacity of CDMA communication systems that have time varying channels. In addition, the computer simulation results show that the required time delay values of the time diversity scheme are reasonably short (20-100 symbols for 10kbps transmission) for fDT values ranging from 0.002 to 0.02.",

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AU - Kato, Shuzo

AU - Feher, Kamilo

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N2 - In order to increase the channel capacity of CDMA (Code Division Multiple Access) mobile and personal communication systems, a new time diversity CDMA scheme that employs orthogonal modulation is proposed. The time diversity CDMA scheme with orthogonal modulation reduces the required Eb/(No + Io) by 5dB at Pe = 10-2 in Rayleigh fading environments with fDT (the product of Doppler frequency and one symbol duration) values ranging from 0.002 to 0.02. This improvement in required Eb/(No + Io) significantly increases the channel capacity of CDMA communication systems that have time varying channels. In addition, the computer simulation results show that the required time delay values of the time diversity scheme are reasonably short (20-100 symbols for 10kbps transmission) for fDT values ranging from 0.002 to 0.02.

AB - In order to increase the channel capacity of CDMA (Code Division Multiple Access) mobile and personal communication systems, a new time diversity CDMA scheme that employs orthogonal modulation is proposed. The time diversity CDMA scheme with orthogonal modulation reduces the required Eb/(No + Io) by 5dB at Pe = 10-2 in Rayleigh fading environments with fDT (the product of Doppler frequency and one symbol duration) values ranging from 0.002 to 0.02. This improvement in required Eb/(No + Io) significantly increases the channel capacity of CDMA communication systems that have time varying channels. In addition, the computer simulation results show that the required time delay values of the time diversity scheme are reasonably short (20-100 symbols for 10kbps transmission) for fDT values ranging from 0.002 to 0.02.

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M3 - Conference contribution

AN - SCOPUS:0027307086

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PB - Publ by IEEE

T2 - Proceedings of the 43rd IEEE Vehicular Technology Conference

Y2 - 18 May 1993 through 20 May 1993

ER -

Time diversity CDMA scheme employing orthogonal modulation for time varying channels

Abstract

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