So let me get this straight, Alexandre: If I understand you correctly, you want to take somebody else's idea and publish it as your own?
Perhaps I misunderstood your intention, in which case you are putting the cart before the horse; the paper is the last thing to be done after you've put in the research or made the discovery to have something of merit to contribute to the community. The paper is just a vehicle to deliver the results of your work to the community at large so that others can build on your work.
There are plenty of areas ripe for research in FPGA related topics, but simply having a goal of publishing a paper without having something of merit first is not helpful. In fact, speaking as a conference paper reviewer, the last thing we need is more papers with nothing new to offer. We have to review every paper that is submitted, and there are already plenty of papers submitted that amount to little more than a regurgitation of somebody else's work with no significant new contribution. While those papers seldom get published, they still have to be reviewed and are a waste of the conference committee's time as well as yours.