Walker is an experienced striker formerly of Aston Villa and Shrewsbury town via Bristol Rovers and arrives at the pirelli stadium with a career record of 78 goals from 208 games
On his latest acquisition Peschisolido said: "I am absolutely delighted Richard has agreed to join us.
"He has quality, pedigree and a good goalscoring record, and I'm sure he will be a huge asset to us.
"I've said all along that I want us to be strong down the spine of the team and Richard is exactly the type of player I've been looking for to widen our attacking options.