Modulo Loss Reduction for Vector Perturbation Systems

• Published in: IEEE transactions on communications Vol. 58; no. 12; pp. 3392 - 3396
• Main Authors: Han, Hyeon-Seung, Park, Seok-Hwan, Lee, Sunho, Lee, Inkyu
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antennas; Applied sciences; Coding, codes; Complexity; Complexity theory; Exact sciences and technology; Gain; Information, signal and communications theory; Lattices; Mathematical analysis; MIMO; Multiple antennas; Perturbation; precoding; Radiocommunications; Receivers; Reduction; Searching; Signal and communications theory; Signal to noise ratio; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Transmitters; Transmitters. Receivers; vector perturbation; Vectors (mathematics); Performance evaluation; Coding; Transmitter; Data transmission; Perturbation; precoding; Antenna array; vector perturbation; Multiple antennas
• ISSN: 0090-6778; 1558-0857
• DOI: 10.1109/TCOMM.2010.092810.090187

In this letter, we present an improved precoding technique which reduces a modulo loss in vector perturbation with low complexity. Instead of searching perturbation vectors in the infinite lattice, the proposed scheme restricts the search range by utilizing the distribution of the perturbation vector depending on transmitted data. As a result, we can achieve significant complexity savings at the transmitter while providing better performance compared to the original vector perturbation.