| 摘要 |
An apparatus for decoding a received spread spectrum signal having a data signal modulated with a pseudo-noise code and transmitted as an RF spread spectrum signal. A first reference register holds a first pseudo-noise signal (22), a second reference register holds s second pseudo-noise signal (25), and a receive-register holds a received spread spectrum signal (27). A first modulo adder (26) adds each chip of the received spread spectrum signal with each respective chip of the first pseudo-noise signal, thereby generating a first plurality of chip- comparison signals. A first summer adds the first plurality of chip-comparison signals, generating a first correlation signal, The comparator compares the correlation signal to an upper-threshold level and a lower-threshold level, and respectively generates a first data-symbol signal or a second data-symbol signal. |
