| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide power-efficient sign extension using a Booth multiplication method for transmission processing in a communication (CDMA, for instance) system by a digital signal processor. <P>SOLUTION: A sign bit allows the Booth multiplication process to perform a sign extension step. This further involves one-element extending a predetermined partial product row of a Booth multiplication tree using the sign bit for preserving the correct sign of the predetermined partial product row. The sign-extension bit is positioned in a carry-out column to extend the product of the Booth multiplication process. Then, the method and system form a final product from the Booth multiplication tree by adding the carry-out value to the sign bit positioned in the predetermined column of the Booth multiplication tree. The result is to effectively extend the sum component of the final product with the sign and zero-extending the carry component of the final product. <P>COPYRIGHT: (C)2012,JPO&INPIT |
