Abstract
First, in order to increase the number of transmitted bits per pulse in optical code division multiple access(CDMA) system, we consider M-ary pulse-amplitude modulation(PAM) coded system. However, when the correlator is applied in the receiver, the Multiple Access Interferences (MAIs) with high intensities deteriorate the system performance significantly even if the number of MAIs is small Consequently, we propose an optical CDMA system with M-ary PAM in conjunction with the chip-level receiver by M-tevel threshold detection instead of the correlator. The proposed system can obtain the synergistic effect between the PAM and the chip-level receiver, which the chip-level receiver reduces more MAIs compared with the correlator and the PAM has the larger number of transmitted bits per frame than on-off keying(OOK), and achieves higher tolerance to MAIs than the OOK-CDMA system with the chip-level receiver at the same bit rate and number of subscribers. We show that the proposed PAM-CDMA system with the chip-level receiver achieves better bit error probability than the OOK-CDMA system with the chip-level receiver.
| Original language | English |
|---|---|
| Title of host publication | GLOBECOM - IEEE Global Telecommunications Conference |
| Pages | 1876-1882 |
| Number of pages | 7 |
| Volume | 3 |
| Publication status | Published - 2004 |
| Event | GLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States Duration: 2004 Nov 29 → 2004 Dec 3 |
Other
| Other | GLOBECOM'04 - IEEE Global Telecommunications Conference |
|---|---|
| Country | United States |
| City | Dallas, TX |
| Period | 04/11/29 → 04/12/3 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Enhancement of tolerance to MAIs by the synergistic effect between M-ary PAM and the chip-level receiver for optical CDMA systems. / Miyazawa, Takaya; Sasase, Iwao.
GLOBECOM - IEEE Global Telecommunications Conference. Vol. 3 2004. p. 1876-1882.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Enhancement of tolerance to MAIs by the synergistic effect between M-ary PAM and the chip-level receiver for optical CDMA systems
AU - Miyazawa, Takaya
AU - Sasase, Iwao
PY - 2004
Y1 - 2004
N2 - First, in order to increase the number of transmitted bits per pulse in optical code division multiple access(CDMA) system, we consider M-ary pulse-amplitude modulation(PAM) coded system. However, when the correlator is applied in the receiver, the Multiple Access Interferences (MAIs) with high intensities deteriorate the system performance significantly even if the number of MAIs is small Consequently, we propose an optical CDMA system with M-ary PAM in conjunction with the chip-level receiver by M-tevel threshold detection instead of the correlator. The proposed system can obtain the synergistic effect between the PAM and the chip-level receiver, which the chip-level receiver reduces more MAIs compared with the correlator and the PAM has the larger number of transmitted bits per frame than on-off keying(OOK), and achieves higher tolerance to MAIs than the OOK-CDMA system with the chip-level receiver at the same bit rate and number of subscribers. We show that the proposed PAM-CDMA system with the chip-level receiver achieves better bit error probability than the OOK-CDMA system with the chip-level receiver.
AB - First, in order to increase the number of transmitted bits per pulse in optical code division multiple access(CDMA) system, we consider M-ary pulse-amplitude modulation(PAM) coded system. However, when the correlator is applied in the receiver, the Multiple Access Interferences (MAIs) with high intensities deteriorate the system performance significantly even if the number of MAIs is small Consequently, we propose an optical CDMA system with M-ary PAM in conjunction with the chip-level receiver by M-tevel threshold detection instead of the correlator. The proposed system can obtain the synergistic effect between the PAM and the chip-level receiver, which the chip-level receiver reduces more MAIs compared with the correlator and the PAM has the larger number of transmitted bits per frame than on-off keying(OOK), and achieves higher tolerance to MAIs than the OOK-CDMA system with the chip-level receiver at the same bit rate and number of subscribers. We show that the proposed PAM-CDMA system with the chip-level receiver achieves better bit error probability than the OOK-CDMA system with the chip-level receiver.
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M3 - Conference contribution
AN - SCOPUS:18144364619
VL - 3
SP - 1876
EP - 1882
BT - GLOBECOM - IEEE Global Telecommunications Conference
ER -