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 |
| Place of Publication | Piscataway, NJ, United States |
| Publisher | Publ by IEEE |
| Pages | 444-447 |
| Number of pages | 4 |
| ISBN (Print) | 078031266X |
| Publication status | Published - 1993 |
| Externally published | Yes |
| Event | Proceedings of the 43rd IEEE Vehicular Technology Conference - Secaucus, NJ, USA Duration: 1993 May 18 → 1993 May 20 |
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
- Electrical and Electronic Engineering
Cite this
Time diversity CDMA scheme employing orthogonal modulation for time varying channels. / Kubota, Shuji; Kato, Shuzo; Feher, Kamilo.
IEEE Vehicular Technology Conference. Piscataway, NJ, United States : Publ by IEEE, 1993. p. 444-447.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Time diversity CDMA scheme employing orthogonal modulation for time varying channels
AU - Kubota, Shuji
AU - Kato, Shuzo
AU - Feher, Kamilo
PY - 1993
Y1 - 1993
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.
UR - http://www.scopus.com/inward/record.url?scp=0027307086&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027307086&partnerID=8YFLogxK
M3 - Conference contribution
SN - 078031266X
SP - 444
EP - 447
BT - IEEE Vehicular Technology Conference
PB - Publ by IEEE
CY - Piscataway, NJ, United States
ER -