CDMA system with frequency domain equalization

A code division multiple access (CDMA) system comprising:

• at least one CDMA receiver for processing a received signal, said CDMA receiver having:
• a sequence extension remover for removing a predetermined number of chips from at least one predetermined position of said received signal to thereby form a modified signal;
• an orthogonal transform block, coupled to said sequence extension remover, for transforming said modified signal in a first domain to form a transformed signal in a second domain;
• an equalizer block, coupled to said transform block and having a channel estimator, for equalizing said transformed signal to thereby reduce channel distortion and form an equalized signal:
• an inverse orthogonal transform block, coupled to said equalizer block, for inverse transforming said equalized signal to form an output in said first domain;
• and
• a despreader for despreading said output to thereby derive a group of symbols.

A method for processing a received signal received in a code division multiple access (CDMA) system, said method comprising the steps of:

• removing a predetermined number of chips from at least one predetermined position of said received signal to thereby form a modified signal;
• orthogonally transforming said modified signal in a first domain to form a transformed signal in a second domain;
• equalizing said transformed signal to thereby reduce channel distortion and form an equalized signal;
• inverse orthogonally transforming said equalized signal to form an output in said first domain;
• and
• despreading said output to thereby derive a group of symbols.