High Definition Rca Great Price For Great Product How To Convert Standard Definition Cable Tv To High Definition?

How To Convert Standard Definition Cable Tv to High Definition? - high definition rca great price for great product

I want my standard-definition TV signal cable to convert high-definition. Is it possible with a tuner or decoder. I have a coaxial cable to the wall. Thank you, and if a decoder please enter the company and model number.
And I have an HDTV.