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 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.
| 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 |
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