1
کامپیوتر و شبکه::
درخت جمعکننده
2 2 multiplier blocks, while accurate adders are used in an adder tree to accumulate the approximate partial products.
In the proposed approximate multiplier, an adder tree is utilized for partial product accumulation; the error signals in the tree are then used to compensate the error in the output to obtain a product with a better accuracy.
Two steps are required to reduce errors: i) error accumulation and ii) error recovery by the addition of the accumulated errors to the adder tree output using an accurate adder (Fig. 1).
2) Error Recovery: To reduce the error, an accumulated er- ror vector is added to the adder tree output using a conventional adder (e.g. a carry look-ahead adder).
For example in an 8 8 adder tree, there are a total of 7 error vectors, generated by the 7 approximate adders in the tree.
واژگان شبکه مترجمین ایران