| 摘要 |
<p>RCA 83,206 Apparatus for estimating the square of a multi-bit digital sample having a value (A+B) segments the sample into a most significant bit (MSB) portion having the value A, and a least significant bit (LSB) portion having a value B. The LSB portion is added back to the sample to produce a sample having a value of (A+2B), which sample is applied to the multiplicand input of a multiplier circuit. The MSB portion of the sample is coupled to the multiplier input of the multiplier circuit which produces the product (A2+2AB) as an estimate of the square of the sample. Estimating the square in this manner significantly reduces the size of the multiplier circuit.</p> |
