The remote uses infrared light signals, and as such requires line of sight to the tv.
If you can't rearrange things to make it accessible, you could try a mirror placed perpendicular to the tv, but that may have other aesthetic implications.
Another option to consider would be to get a universal remote that works off of radio frequency instead, that will have a small blaster/emitter that will sit in front of the tv to relay the signals:
http://amzn.to/1Ik6Ae2 or http://amzn.to/1lqbPOD
Or even just a signal relay device for your existing remote: http://amzn.to/1lqbED5 This is very inexpensive and would essentially just let you relocate the sensor to the top or other side of the tv instead.
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