Iterative multi-stage detection technique for a diversity receiver having multiple antenna elements

A system for receiving a signal using K antenna elements, the system comprising:

• at least one processor that receives, via the K antenna elements, one of a corresponding K replicas of the signal and thereby generating K received signal replicas;
• said at least one processor receives N of the K received signal replicas and generating of a first set of N channel signals, wherein each of the N channel signals is spread according to a corresponding one of N orthogonal sequences and corresponds to one of the N received signal replicas;
• said at least one processor receives M of the K received signal replicas and generates a second set of M channel signals, wherein each of the M channel signals is spread according to one of the N orthogonal sequences and corresponds to one of the M received signal replicas;
• said at least one processor combines the first set of N channel signals and the second set of M channel signals into a multiplexed signal, and provides the multiplexed signal to the signal processing chain;
• said at least one processor downconverts the multiplexed signal to a baseband multiplexed signal;
• and
• said at least one processor receives the baseband multiplexed signal and providing of K separate signals from the baseband multiplexed signal, wherein each of the K separate signals corresponds to one of the K replicas of the signal.

A system for receiving a signal using K antenna elements, the system comprising:

• one or more circuits that receives, via the K antenna elements, one of a corresponding K replicas of the signal and thereby generating K received signal replicas;
• said one or more circuits receives N of the K received signal replicas and generates a first set of N channel signals, wherein each of the N channel signals is spread according to a corresponding one of N orthogonal sequences and corresponds to one of the N received signal replicas;
• said one or more circuits receives M of the K received signal replicas and generating of a second set of M channel signals, wherein each of the M channel signals is spread according to one of the N orthogonal sequences and corresponds to one of the M received signal replicas;
• said one or more circuits combines the first set of N channel signals and the second set of M channel signals into a multiplexed signal, and provides the multiplexed signal to the signal processing chain;
• said one or more circuits downconverts the multiplexed signal to a baseband multiplexed signal;
• and
• said one or more circuits receives the baseband multiplexed signal and provides K separate signals from the baseband multiplexed signal, wherein each of the K separate signals corresponds to one of the K replicas of the signal.