### Abstract

It is known that spreading codes generated by a Markov chain improve bit error rate performance of direct sequence/code division multiple access (DS/CDMA) systems if the chip pulse is rectangular. Real analysis tells us that a pair of the rectangular and sine functions is one of Fourier transform and its inverse Fourier transform and vice versa. On the other hand, Gaussian pulses have the self-duality property: they have the same expression in both time and frequency domains. Gaussian chip pulses sacrifice inter-symbol interference. However, the use of Markovian codes together with a Gaussian pulse increases the system performance approximately 30 % in terms of the number of users.

Original language | English |
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Title of host publication | ISCAS 2006 |

Subtitle of host publication | 2006 IEEE International Symposium on Circuits and Systems, Proceedings |

Pages | 3117-3120 |

Number of pages | 4 |

Publication status | Published - Dec 1 2006 |

Event | ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece Duration: May 21 2006 → May 24 2006 |

### Publication series

Name | Proceedings - IEEE International Symposium on Circuits and Systems |
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ISSN (Print) | 0271-4310 |

### Other

Other | ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems |
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Country | Greece |

City | Kos |

Period | 5/21/06 → 5/24/06 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Electrical and Electronic Engineering

### Cite this

*ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Proceedings*(pp. 3117-3120). [1693285] (Proceedings - IEEE International Symposium on Circuits and Systems).

**Gaussian chip shaping enhances the superiority of Markovian codes in DS/CDMA systems.** / Jitsumatsu, Yutaka; Kohda, Tohru.

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

*ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Proceedings.*, 1693285, Proceedings - IEEE International Symposium on Circuits and Systems, pp. 3117-3120, ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Kos, Greece, 5/21/06.

}

TY - GEN

T1 - Gaussian chip shaping enhances the superiority of Markovian codes in DS/CDMA systems

AU - Jitsumatsu, Yutaka

AU - Kohda, Tohru

PY - 2006/12/1

Y1 - 2006/12/1

N2 - It is known that spreading codes generated by a Markov chain improve bit error rate performance of direct sequence/code division multiple access (DS/CDMA) systems if the chip pulse is rectangular. Real analysis tells us that a pair of the rectangular and sine functions is one of Fourier transform and its inverse Fourier transform and vice versa. On the other hand, Gaussian pulses have the self-duality property: they have the same expression in both time and frequency domains. Gaussian chip pulses sacrifice inter-symbol interference. However, the use of Markovian codes together with a Gaussian pulse increases the system performance approximately 30 % in terms of the number of users.

AB - It is known that spreading codes generated by a Markov chain improve bit error rate performance of direct sequence/code division multiple access (DS/CDMA) systems if the chip pulse is rectangular. Real analysis tells us that a pair of the rectangular and sine functions is one of Fourier transform and its inverse Fourier transform and vice versa. On the other hand, Gaussian pulses have the self-duality property: they have the same expression in both time and frequency domains. Gaussian chip pulses sacrifice inter-symbol interference. However, the use of Markovian codes together with a Gaussian pulse increases the system performance approximately 30 % in terms of the number of users.

UR - http://www.scopus.com/inward/record.url?scp=34547295847&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547295847&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:34547295847

SN - 0780393902

SN - 9780780393905

T3 - Proceedings - IEEE International Symposium on Circuits and Systems

SP - 3117

EP - 3120

BT - ISCAS 2006

ER -