Heejin Joung, Han-Shin Jo, Cheol Mun, Jong-Gwan Yook, Vol. 8, No. 4, April 28, 2014
10.3837/tiis.2014.04.008

• Space-polarization division multiple access (SPDMA)
• codebook design
• discrete Fourier transform (DFT) codebook
• dual polarized antenna arrays