Data detection for codes with non-uniform spreading factors
AssigneeInterDigital Technology Corporation
InventorsYounglok Kim, Jung-Lin Pan, Ariela Zeira, Alexander Reznik
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Abstract
A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.
Claims40
A method for simultaneously estimating data transmitted in a spread spectrum communication system using different spreading factors, the method comprising:
- receiving a plurality of communication signals, each communication signal having an associated code, at least two of the communication signals having a different spreading factor, the associated codes having a scrambling code period;
- constructing a total system response matrix having blocks, each block having one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication, M is based on the scrambling code period;
- and
- using the constructed system response matrix to estimate data of the received plurality of communication signals.
A user equipment comprising:
- means for receiving a plurality of communication signals, each communication signal having an associated code, at least two of the communication signals having a different spreading factor, the associated codes having a scrambling code period;
- means for constructing a total system response matrix having blocks, each block having one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication, M is based on the scrambling code period;
- and
- means for using the constructed system response matrx to estimate data of the received plurality of communication signals.
A user equipment comprising:
- an antenna for receiving a plurality of communication signals, each communication signal having an associated code, at least two of the communication signals having a different spreading factor, the associated codes having a scrambling code period;
- a data detection device for constructing a total system response matrix having blocks, each block having one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication, M is based on the scrambling code period;
- and for using the constructed system response matrix to estimate data of the received plurality of communication signals.
A base station comprising:
- means for receiving a plurality of communication signals, each communication signal having an associated code, at least two of the communication signals having a different spreading factor, the associated codes having a scrambling code period;
- means for constructing a total system response matrix having blocks, each block having one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication, M is based on the scrambling code period;
- and
- means for using the constructed system response matrix to estimate data of the received plurality of communication signals.
A base station comprising:
- an antenna for receiving a plurality of communication signals, each communication signal having an associated code, at least two of the communication signals having a different spreading factor, the associated codes having a scrambling code period;
- a data detection device for constructing a total system response matrix having blocks, each block having one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication, M is based on the scrambling code period;
- and for using the constructed system response matrix to estimate data of the received plurality of communication signals.
Dependencies are inferred from the claim text.