Frame Synchronization using Frequency Domain Processing for Spread-Spectrum Systems

A.P. Almeida, F.B. Cercas, and R. Dinis (Portugal)


Discrete Fourier Transforms, Pseudonoise, Synchronization, Variable-rate codes


This paper considers a frequency-domain synchronization/channel decoding procedure for systems employing TCH-based training blocks (Tomlison, Cercas and Hughes). Using the fact that an N-point Discrete Fourier Transform (DFT) can be partitioned into M smaller DFTs we present a procedure for simultaneous decoding/despreading and synchronization that can switch between 16 bit-length and 256 bit-length cyclic codes.

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