ASYMMETRIC SPREAD SPECTRUM CORRELATOR

摘要

An apparatus for decoding a spread spectrum signal coded with a pseudonoise code. A count control (30) is coupled to a clock generator (31) which is connected to a code generator (32) and reference registers (33). The code generator (32) is also connected to the reference registers (33). The count control (30) controls the length of the pseudonoise signal chosen by code selector (34) to be detected by the receiver, and sends signals to the code clock generator (31) to cause code generator (32) to output a code of length L to reference registers (33). Count control (30) triggers code clock generator (31), triggering code generator (32) and reference registers (33). The code selection circuit (34) outputs to the code generator (32). A single code may be loaded into the reference registers (33), or the reference registers (33) can be periodically loaded with different codes until a match occurs.