@inproceedings{d2d62ec93f1e4e8ab09ea9ac718d88f3,
title = "Complexity reduction for vector precoding using QoS requirements",
abstract = "We propose a low-complexity vector precoding (VP) scheme for the downlink of multi-user multiple input multiple output (MU-MIMO) systems. Instead of performing a full sphere search to maximize the receive signal to noise ratio (SNR), the search for the perturbation vectors finishes once a threshold SNR value is reached, thus saving significant computational burden at the transmitter. This threshold is determined by the quality of service (QoS) requirements of the mobile users. To evaluate the advantages of the proposed technique compared to VP, we analytically calculate its computational complexity in terms of the volume of the associated search space. The results show that the proposed thresholded VP (TVP) offers a significantly reduced complexity compared to VP.",
keywords = "complexity reduction, multi-user MIMO, non-linear precoding, sphere encoding, Vector precoding",
author = "Christos Masouros and Tharm Ratnarajah and Mathini Sellathurai",
year = "2013",
month = oct,
day = "21",
doi = "10.1109/ICASSP.2013.6638632",
language = "English",
series = "IEEE International Conference on Acoustics, Speech and Signal Processing",
publisher = "IEEE",
pages = "5094--5098",
booktitle = "2013 IEEE International Conference on Acoustics, Speech, and Signal Processing",
address = "United States",
note = "38th IEEE International Conference on Acoustics, Speech and Signal Processing 2013, ICASSP 2013 ; Conference date: 26-05-2013 Through 31-05-2013",
}