### Abstract

The Gaussian approximation is widely used as a simple method of derivation for the average bit-error rate in direct-sequence spread-spectrum communications. The Gaussian approximation cannot always derive the bit-error rate with high accuracy since the accuracy tends to be degraded with the increase of E_{b}/N_{0} when the number of interference symbols is low. This article proposes a method of theoretical analysis in which the probability density function for the composite amplitude of the interference signal is derived by faithfully following the signal processing executed in the spread-spectrum communication system, after which the bit-error rate is derived. The validity of the method is demonstrated by verifying that the bit-error rate obtained by the proposed method agrees well with the value obtained by computer simulation.

Original language | English |
---|---|

Pages (from-to) | 57-64 |

Number of pages | 8 |

Journal | Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi) |

Volume | 83 |

Issue number | 5 |

Publication status | Published - 2000 |

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### Keywords

- Band-limiting
- Bit-error rate
- Direct sequence spreading
- Probability density function
- Spread-spectrum communications

### ASJC Scopus subject areas

- Computer Networks and Communications
- Electrical and Electronic Engineering

### Cite this

**Derivation of average bit-error rate in direct-sequence spread-spectrum communications.** / Usuda, Masafumi; Kikuta, Tohru; Takahata, Fumio.

Research output: Contribution to journal › Article

*Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)*, vol. 83, no. 5, pp. 57-64.

}

TY - JOUR

T1 - Derivation of average bit-error rate in direct-sequence spread-spectrum communications

AU - Usuda, Masafumi

AU - Kikuta, Tohru

AU - Takahata, Fumio

PY - 2000

Y1 - 2000

N2 - The Gaussian approximation is widely used as a simple method of derivation for the average bit-error rate in direct-sequence spread-spectrum communications. The Gaussian approximation cannot always derive the bit-error rate with high accuracy since the accuracy tends to be degraded with the increase of Eb/N0 when the number of interference symbols is low. This article proposes a method of theoretical analysis in which the probability density function for the composite amplitude of the interference signal is derived by faithfully following the signal processing executed in the spread-spectrum communication system, after which the bit-error rate is derived. The validity of the method is demonstrated by verifying that the bit-error rate obtained by the proposed method agrees well with the value obtained by computer simulation.

AB - The Gaussian approximation is widely used as a simple method of derivation for the average bit-error rate in direct-sequence spread-spectrum communications. The Gaussian approximation cannot always derive the bit-error rate with high accuracy since the accuracy tends to be degraded with the increase of Eb/N0 when the number of interference symbols is low. This article proposes a method of theoretical analysis in which the probability density function for the composite amplitude of the interference signal is derived by faithfully following the signal processing executed in the spread-spectrum communication system, after which the bit-error rate is derived. The validity of the method is demonstrated by verifying that the bit-error rate obtained by the proposed method agrees well with the value obtained by computer simulation.

KW - Band-limiting

KW - Bit-error rate

KW - Direct sequence spreading

KW - Probability density function

KW - Spread-spectrum communications

UR - http://www.scopus.com/inward/record.url?scp=24044435335&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24044435335&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:24044435335

VL - 83

SP - 57

EP - 64

JO - Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)

JF - Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)

SN - 8756-6621

IS - 5

ER -