Multiple channel joint decoding at mobile handset

A method of decoding an information symbol from a composite signal, the method comprising, under control of a CDMA receiving system:

• partitioning the composite signal into a plurality of segments, each segment of the plurality of segments being shorter in length than the information symbol;
• determining a first output value corresponding to a segment, based on a correlation between the segment and a corresponding segment of a first CDMA code having a same length as the information symbol;
• and
• determining a second output value from the composite signal based on a second CDMA code, and
• modifying the first output value and the second output value, based on a correlation between the first CDMA code and the second CDMA code.

A CDMA receiving system comprising:

• a receiver that is configured to receive a composite signal that includes a plurality of information signals;
• a decoder, operably coupled to the receiver, that is configured to decode an information signal of the plurality of information signals, wherein the decoder decodes the information signal by separately decoding segments of the information signal using segments of a CDMA code that are shorter in length than the CDMA code, to produce an intermediate value corresponding to the information signal associated with each segment, and the decoder is further configured to form a composite of the intermediate values corresponding to each segment;
• at least one other decoder that is configured to decode at least one other information signal using at least one other CDMA code;
• and
• a decorrelator that is configured to provide an output value based on the intermediate values, an output of each of the at least one other decoder, and a correlation among the corresponding segment of the first CDMA code and each of the at least one other CDMA codes.