@conference {1060, title = {A complex-integration approach to the saddlepoint approximation for random-coding bounds}, booktitle = {2014 International Symposium on Wireless Communications Systems}, year = {2014}, month = {08/2014}, address = {Barcelona}, author = {Martinez, Alfonso and Scarlett, Jonathan and Dalai, Marco and Guill{\'e}n i F{\`a}bregas, Albert} }