Apologies if this has been posted before:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.yourobserver.com%2Fsites%2Fdefault%2Ffiles%2F30762_standard.png&hash=9a0c52eb1792cb1d5e6f7d9e4c263b940cf27580)
Interesting way to deal with nearby signal. Here is a paper you may enjoy too: http://static1.squarespace.com/static/51cc8d46e4b0b242fc8d0f33/t/55c4fd54e4b026fd994543cb/1438973268412/113.+Hybrid+Interchange+Designs+Evolving+Something+new+from+Something+Old.pdf