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What Are The Drawbacks Of Walsh Codes?

Answer»

Walsh codes have the following DRAWBACKS :

  1. The codes do not have a single, narrow autocorrelation peak.
  2. The SPREADING is not over the whole bandwidth; instead the ENERGY is spread over a number of discrete frequency components.
  3. Although the full sequence cross correlation is IDENTICALLY zero, this does not hold for a partial sequence cross correlation function. Thus advantage of using ORTHOGONAL codes is lost.
  4. Orthogonality is also affected by channel properties like multi path.

Walsh codes have the following drawbacks :


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