Method and apparatus for reducing multi-user processing in wireless communication systems
AssigneeInterDigital Technology Corporation
InventorsJung-Lin Pan, Jaeyoung Kwak, Donald M. Grieco
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Abstract
A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a parent code is identified for each group of detected codes. A matrix A is constructed and joint detection is performed using the identified parent codes. Data symbols of the detected codes are obtained from the data symbols of the identified parent codes.
Claims12
A receiver for reducing multi-user processing, the receiver comprising:
- a code detector configured to detect transmitted codes;
- a code grouper configured to group codes having the same channel impulse responses;
- a parent code locator configured to identify a parent code for each group identified by the code grouper wherein detected codes having unique channel impulse responses are considered parent codes;
- a multi-user detector (MUD);
- and
- a post data converter.
A method for reducing multi-user processing in a receiver, the method comprising the steps of:
- detecting at least one transmitted code;
- identifying a channel impulse response for each detected code;
- grouping detected code(s) having the same channel impulse response together;
- identifying a parent code for each group of detected codes wherein detected codes having unique channel impulse responses are considered separate parent codes;
- constructing a matrix A using the identified parent codes;
- performing joint detection using the identified parent codes;
- and
- obtaining a plurality of data symbols carried by the at least one detected code.
Dependencies are inferred from the claim text.