Method for producing spread-spectrum code with low interference window from CCK code

The invention discloses a method that uses CCK code to produce the low interference window spreading code, in which, the non-cyclic self-related and non-cyclic inter-related sequences of the low interference window spreading code are less than the predetermined values in the vicinity of zero-offset, including the following steps : 1) according to the spreading gain, choose CCK code ; 2) according to the cost function being the minimum or less than the predetermined value, ensure that the associated value is minimum or less than the predetermined value CCK weight code. The low interference window spreading code can be used for time-domain spreading communication systems, better overcoming the multi-path interference of wireless channel, and meanwhile, reducing the multi-user interference; it also can be used for OFDM communication systems, processing frequency domain spreading modulation in the OFDM frequency domain, which can reduce ICI interference due to frequency shift or Doppler expansion.