Your concern is a subclass of block codes called linear block codes. You can define linear codes as those codes in which the sum of two code words is another code word, and the product of any code ...

Find out how a digital technique performs multiplication on two bitstreams and avoids the cost of the analog multiplier.

Ironically, product codes had been discussed nearly 40 years earlier . In the general sense, turbo-product, or block-turbo, codes are composed of a multidimensional array of block codes, such as ...