@article {Via - TxRx Analog Beamforming - TSP2010,
	title = {A General Criterion for Analog {Tx-Rx} Beamforming under {OFDM} Transmissions},
	journal = {IEEE Transactions on Signal Processing},
	volume = {58},
	number = {4},
	year = {2010},
	month = {April},
	pages = {2155-2167},
	author = {V{\'\i}a, Javier and Santamar{\'\i}a, Ignacio and Elvira, Victor and Eickhoff, R.}
}
