For combining diversity path signals comprising symbols each modulated in accordance with one of a plurality of orthogonal (e.g. Walsh) functions, a diversity combiner includes, for each path, a demodulator to demodulate each modulated signal symbol in accordance with a selected one of the orthogonal...http://www.google.com/patents/US5930305?utm_source=gb-gplus-sharePatent US5930305 - Signal demodulation and diversity combining in a communications system using orthogonal modulation
