Patent ID: 8165103
Filing Date: 2012-04-24
Classification: H04B,H04W

Abstract:
1. A hardware accelerator device useable for preamble detection of a Physical Random Access Channel (PRACH) in a CDMA based communication system, comprising: means for storing/buffering input samples received at an antenna at a first rate; means for reading a predetermined consecutive number of said input samples in parallel at a second different rate; and wherein said device is further partitioned into at least one reusable unit providing code correlation, and at least one preamble detection dedicated unit providing signature code despreading, said reusable unit comprising means for correlating, for at least one iteration, at least a subset of said read predetermined consecutive number of input samples with a predetermined code to provide a correlation output for a preset number of time lags depending on a mode of operation of said device; and said preamble detection dedicated unit comprising means for preamble detection configured for providing Hadamard Transformation of said correlation output to enable preamble detection, and wherein all said means are arranged on a single hardware chip to enable high-speed data transmissions between the respective means.