Method and apparatus for code space search in a receiver

An apparatus for code space search, the apparatus comprising:

• a memory having a portion allocated to code space search, the portion dependent upon an active programmable search mode;
• and
• an integrated circuit coupled to the memory, the integrated circuit comprising:
• a searcher configured to generate a plurality of coherent integration results determined over an initial integration period for each of a plurality of programmable search tasks, each of the programmable search tasks being dynamically reconfigurable at a boundary of the initial integration time;
• an accelerator configured to determine a coherent accumulation of coherent integration results over a coherent integration length and frequency hypothesis determined by the active programmable search mode;
• and
• a data mover configured to perform DMA data transfers between the searcher and memory and between the accelerator and memory.

A method of code space search, the method comprising:

• capturing complex samples of a received wireless signal;
• configuring a plurality of code space search tasks, each of the code space search tasks being dynamically reconfigurable at a boundary of an initial integration time;
• executing each of the code space search tasks to generate a plurality of coherent integration results obtained over the initial integration time;
• and
• determining a coherent accumulation of a plurality of coherent integration results, an integration length and frequency offset associated with the coherent accumulation based on a programmable code space search mode.

A method of code space search, the method comprising:

• capturing complex samples of a received wireless signal;
• executing each of a plurality of code space search tasks to generate a plurality of coherent integration results corresponding to a plurality of code space hypothesis, each of the code space search tasks being dynamically reconfigurable at a boundary of an initial integration time;
• storing the plurality of coherent integration results in memory;
• retrieving from memory a number of coherent integration results corresponding to an integration length;
• and
• determining a coherent accumulation of the number of coherent integration results.

An apparatus for code space search, the apparatus comprising:

• means for capturing complex samples of a received wireless signal;
• means for configuring a plurality of code space search tasks, each of the code space search tasks being dynamically reconfigurable at a boundary of an initial integration time;
• means for searching according to each of the code space search tasks to generate a plurality of coherent integration results obtained over the initial integration time;
• and
• means for determining a coherent accumulation of a plurality of coherent integration results, an integration length and frequency offset associated with the coherent accumulation based on a programmable code space search mode.

An apparatus for code space search, the apparatus comprising:

• means for capturing complex samples of a received wireless signal;
• means for searching the complex samples according to each of a plurality of code space search tasks to generate a plurality of coherent integration results corresponding to a plurality of code space hypothesis, each of the code space search tasks being dynamically reconfigurable at a boundary of an initial integration time;
• means for storing the plurality of coherent integration results;
• means for transferring a number of coherent integration results corresponding to an integration length;
• and
• means for determining a coherent accumulation of the number of coherent integration results.

A non-transitory computer-readable storage medium containing instructions stored thereon, which, when executed by an apparatus for code space search, cause the apparatus to perform actions, the instructions comprising:

• program code to capture complex samples of a received wireless signal;
• program code to configure a plurality of code space search tasks, each of the code space search tasks being dynamically reconfigurable at a boundary of an initial integration time;
• program code to search according to each of the code space search tasks to generate a plurality of coherent integration results obtained over the initial integration time;
• and
• program code to determine a coherent accumulation of a plurality of coherent integration results, an integration length and frequency offset associated with the coherent accumulation based on a programmable code space search mode.

A non-transitory computer-readable storage medium containing instructions stored thereon, which, when executed by an apparatus for code space search, cause the apparatus to perform actions, the instructions comprising:

• program code to capture complex samples of a received wireless signal;
• program code to search the complex samples according to each of a plurality of code space search tasks to generate a plurality of coherent integration results corresponding to a plurality of code space hypothesis, each of the code space search tasks being dynamically reconfigurable at a boundary of an initial integration time;
• program code to store the plurality of coherent integration results;
• program code to transfer a number of coherent integration results corresponding to an integration length;
• and
• program code to determine a coherent accumulation of the number of coherent integration results.