Abstract
We propose an interference cancellation technique using reference signal for optical synchronous code-division multiple-access (CDMA) systems. In the proposed system, we use the signature code sequences composed of the group information codes and the modified prime code sequences. The group information codes are added in the forefront of the signature code sequences to estimate the amount of the multiple access interference (MAI). The proposed cancellation technique can be realized with simpler structure than the conventional canceller using the time division reference signal, because it can reduce the number of optical correlators from P to two, where P is the prime number. Considering the effects of the MAI, avalanche photodiode (APD) noise, and thermal noise, we analyze the performance of the proposed system. We show that the proposed canceller achieves better bit error probability than the conventional canceller.
| Original language | English |
|---|---|
| Title of host publication | Conference Record / IEEE Global Telecommunications Conference |
| Publisher | IEEE |
| Pages | 1216-1220 |
| Number of pages | 5 |
| Volume | 2 |
| Publication status | Published - 2000 |
Fingerprint
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Global and Planetary Change
Cite this
Direct-detection optical synchronous CDMA systems with interference canceller using group information codes. / Sawagashira, Hiroshi; Kamakura, Katsuhiro; Ohtsuki, Tomoaki; Sasase, Iwao.
Conference Record / IEEE Global Telecommunications Conference. Vol. 2 IEEE, 2000. p. 1216-1220.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Direct-detection optical synchronous CDMA systems with interference canceller using group information codes
AU - Sawagashira, Hiroshi
AU - Kamakura, Katsuhiro
AU - Ohtsuki, Tomoaki
AU - Sasase, Iwao
PY - 2000
Y1 - 2000
N2 - We propose an interference cancellation technique using reference signal for optical synchronous code-division multiple-access (CDMA) systems. In the proposed system, we use the signature code sequences composed of the group information codes and the modified prime code sequences. The group information codes are added in the forefront of the signature code sequences to estimate the amount of the multiple access interference (MAI). The proposed cancellation technique can be realized with simpler structure than the conventional canceller using the time division reference signal, because it can reduce the number of optical correlators from P to two, where P is the prime number. Considering the effects of the MAI, avalanche photodiode (APD) noise, and thermal noise, we analyze the performance of the proposed system. We show that the proposed canceller achieves better bit error probability than the conventional canceller.
AB - We propose an interference cancellation technique using reference signal for optical synchronous code-division multiple-access (CDMA) systems. In the proposed system, we use the signature code sequences composed of the group information codes and the modified prime code sequences. The group information codes are added in the forefront of the signature code sequences to estimate the amount of the multiple access interference (MAI). The proposed cancellation technique can be realized with simpler structure than the conventional canceller using the time division reference signal, because it can reduce the number of optical correlators from P to two, where P is the prime number. Considering the effects of the MAI, avalanche photodiode (APD) noise, and thermal noise, we analyze the performance of the proposed system. We show that the proposed canceller achieves better bit error probability than the conventional canceller.
UR - http://www.scopus.com/inward/record.url?scp=0034478995&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034478995&partnerID=8YFLogxK
M3 - Conference contribution
VL - 2
SP - 1216
EP - 1220
BT - Conference Record / IEEE Global Telecommunications Conference
PB - IEEE
ER -