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

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

M3 - Article

AN - SCOPUS:24044435335

SN - 8756-6621

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)

IS - 5

ER -