Channel estimation for a wireless communication system with multiple parallel data streams

An apparatus operable to recover first and second data streams transmitted simultaneously via a wireless channel in a wireless communication system, comprising:

• means for deriving a first channel estimate for the wireless channel based on received symbols;
• means for performing detection for the first data stream using the first channel estimate;
• means for deriving a second channel estimate based on the detected first data stream;
• means for deriving a third channel estimate based on the first and second channel estimates;
• and
• means for performing detection for the second data stream using the third channel estimate.

A computer-readable medium storing instructions for recovering first and second data streams transmitted simultaneously via a wireless channel in a wireless communication system, the computer-readable medium comprising:

• code for causing a computer to derive a first channel estimate for the wireless channel based on received symbols;
• code for causing a computer to perform detection for the first data stream using the first channel estimate;
• code for causing a computer to derive a second channel estimate based on the detected first data stream;
• code for causing a computer to derive a third channel estimate based on the first and second channel estimates;
• and
• code for causing a computer to perform detection for the second data stream using the third channel estimate.

A processor configured to execute instructions for recovering first and second data streams transmitted simultaneously via a wireless channel in a wireless communication system, wherein the processor executing the instructions is operable to:

• derive a first channel estimate for the wireless channel based on received symbols;
• perform detection for the first data stream using the first channel estimate;
• instructions to derive a second channel estimate based on the detected first data stream;
• derive a third channel estimate based on the first and second channel estimates;
• and
• perform detection for the second data stream using the third channel estimate.