Zero-forcing assisted spatial stream allocation in uplink multiuser MIMO systems
Alyahya, Aasem N. . 2015
This paper introduces a low complexity postprocessing technique allocating spatial streams for uplink transmissions in multiuser (MU) multiple-input multiple-output (MIMO) systems. The scheme is based on zero-forcing (ZF) cancelation of the multiple access interference (MAI) caused by simultaneous transmissions to the access point (AP) equipped with multiple receive antennas from selected users equipped with multiple transmit antennas. The ZF based post-processing at the AP using all channel gain matrices in MU-MIMO is further aided by the singular value decomposition (SVD) preprocessing utilizing local channel state information (CSI) only. Moreover, an antenna selection algorithm is proposed to gain performance advantage from the channel diversity in multiuser environments. Simulation results are provided to demonstrate the potential of our technique in terms of bit error rate performance and capacity.
This paper considers the selection of users and corresponding uplink decoding in multi-user multiple-input multiple-output (MU-MIMO) multi-cell systems, applicable to future wireless networks with…
This paper considers an interference-aware user selection and resource allocation for uplink multiuser multiple-input multiple-output (MU-MIMO) systems. At the base station (BS), zero-forcing (ZF…
This paper introduces a low complexity postprocessing technique allocating spatial streams for uplink transmissions in multiuser (MU) multiple-input multiple-output (MIMO) systems.