Spread spectrum pulse position modulation communication system

摘要

A first spread spectrum pulse position modulated signal with a pseudonoise code is generated. A second spread spectrum pulse position modulated signal with an inverted pseudonoise code is generated. A third spread spectrum pulse position modulated signal with a pseudonoise code is generated. A fourth spread spectrum pulse position modulated signal with an inverted pseudonoise code is generated. The first and second spread spectrum pulse position modulated signals are added together and thus a fifth spread spectrum pulse position modulated signal is formed. The third and fourth spread spectrum pulse position modulated signals are added together and thus a sixth spread spectrum pulse position modulated signal is formed. Quadrature modulation is performed on the fifth and sixth spread spectrum pulse position modulated signals.