Authors:
Nikolaos I. Miridakis
and
Dimitrios D. Vergados
Affiliation:
University of Piraeus, Greece
Keyword(s):
Hybrid Successive Interference Cancellation (Hybrid SIC), Computational Complexity.
Related
Ontology
Subjects/Areas/Topics:
Detection, Decoding and Diversity Techniques
;
OFDM and Multi-Carrier Systems
;
Telecommunications
;
Wireless Information Networks and Systems
Abstract:
In this paper, we propose a new reception scheme for MIMO-OFDM systems, which can switch between two different equalization methodologies, accordingly, on a subcarrier basis. In fact, the proposed receiver is based on the ordered successive interference cancellation (SIC) technique and uses jointly zero forcing SIC (ZF-SIC) and minimum mean squared error SIC (MMSE-SIC) according to a defined threshold value. The modulation scheme considered in this study is QPSK. Our main objective, here, is the provision of the computational complexity efficiency. Hence, a complexity analysis is provided and upper and lower complexity bounds for the proposed scheme are also derived.