| 摘要 |
<p>The invention generally relates to improved correlators for spread spectrum receivers, particularly for third generation (3G) mobile communications systems. A Golay correlator with a plurality of delay structures is described. At least one of these delay structures comprises a plurality of memory elements (704) sharing a common input bus (720), and a circular shift register (610) having a plurality of bit positions (712), one for each of the memory elements, each bit position storing a single bit and having an associated bit position output (706), each bit position output being coupled to a corresponding one of the memory elements for enabling writing of data into the memory element when the bit position output is active, and wherein, in use, only one of the bit positions in the circular shift register is active, the active bit position moving circularly through the shift register to select the memory element into which data on the common bus is written. The circular shift register may be shared between two or more of the delay structures.</p> |
