TY - GEN
T1 - On the spectral efficiency of MMSE vector precoding
AU - Gardašević, Vesna
AU - Müller, Ralf R.
AU - Zaidel, Benjamin M.
AU - Øien, Geir E.
AU - Lundheim, Lars
PY - 2011
Y1 - 2011
N2 - In this paper, we investigate the spectral efficiency of vector precoding with minimum mean square error (MMSE) linear preprocessing. We restrict the discussion to the spectral efficiency of MMSE vector precoding with quadrature phase-shift keying (QPSK) signaling. Spectral efficiency is investigated by numerical simulations, and plotted as a function of the energy per bit divided by the noise spectral density Eb/N0. The optimum system load , given as the ratio of the number of transmit and receive antennas, that maximizes spectral efficiency is obtained. Previously obtained spectral efficiency results for: Dirty paper coding (DPC), linear zero forcing (ZF), ZF vector precoding, and linear MMSE precoding are provided for comparison. We quantify the performance enhancement that MMSE vector precoding obtains in comparison to vector precoding with ZF linear preprocessing, in the low to medium Eb/N0 region. We also find that MMSE vector precoding does not significantly outperform its linear counterpart.
AB - In this paper, we investigate the spectral efficiency of vector precoding with minimum mean square error (MMSE) linear preprocessing. We restrict the discussion to the spectral efficiency of MMSE vector precoding with quadrature phase-shift keying (QPSK) signaling. Spectral efficiency is investigated by numerical simulations, and plotted as a function of the energy per bit divided by the noise spectral density Eb/N0. The optimum system load , given as the ratio of the number of transmit and receive antennas, that maximizes spectral efficiency is obtained. Previously obtained spectral efficiency results for: Dirty paper coding (DPC), linear zero forcing (ZF), ZF vector precoding, and linear MMSE precoding are provided for comparison. We quantify the performance enhancement that MMSE vector precoding obtains in comparison to vector precoding with ZF linear preprocessing, in the low to medium Eb/N0 region. We also find that MMSE vector precoding does not significantly outperform its linear counterpart.
UR - http://www.scopus.com/inward/record.url?scp=79959318225&partnerID=8YFLogxK
U2 - 10.1109/wcnc.2011.5779407
DO - 10.1109/wcnc.2011.5779407
M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???
AN - SCOPUS:79959318225
SN - 9781612842547
T3 - 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
SP - 1805
EP - 1810
BT - 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
T2 - 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
Y2 - 28 March 2011 through 31 March 2011
ER -