| 摘要 |
Techniques for performing substantially concurrent add-compare-select-add operations and substantially concurrent compare-select-add operations for use in turbo decoders are provided. In one aspect of the invention, a technique for processing data in accordance with a turbo decoder comprises the following steps. Data values of two sets of input data are respectively added to generate a set of sums. Substantially concurrent with the addition step, correction values are respectively added to the sums to generate a set of corrected sums. Substantially concurrent with the respective input data value and correction value addition steps, the sums are compared against one another, and an absolute value of a difference between the sums is compared against base and bound values. Then, one of the corrected sums is selected based on the comparison steps. Preferably, respective sub-steps within the input value addition step, the correction value addition step, and the comparison step are performed concurrently.
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