NRZ and biphase-L formatted quadriphase modulated GPS transmissi

Details NRZ and biphase-L formatted quadriphase modulated GPS transmissi NRZ and biphase-L formatted quadriphase modulated GPS transmissi

1998-01-28

2000-11-14

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375130, 375132, 375140, H04L 2730

Patent

active

061480223

ABSTRACT:
An NRZ and biphase-L formatted, quadriphase modulated GPS signal transmission communication method provides for the simultaneous modulation of two CDMA spread spectrum codes such as the GPS C/A code and either the P(Y) code, or an arbitrary NEW code modulating a single carrier for GPS use in one or both L1 and L2 bands. The use of NRZ formatting and biphase-L formatting provides spectral separation even though both spread spectrum signals are modulated onto the same carrier.

REFERENCES:
patent: 5381446 (1995-01-01), McIntosh
patent: 5400359 (1995-03-01), Hikoso et al.
patent: 5469470 (1995-11-01), Tankahashi
patent: 5923287 (1999-07-01), Lennen

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