Towards efficient design of fixed-point iterative receiver for coded MIMO-OFDM systems

• Published in: 2016 23rd International Conference on Telecommunications (ICT) pp. 1 - 5
• Main Authors: El Chall, Rida, Nouvel, Fabienne, Helard, Maryline, Kokar, Yvan, Ming Liu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.05.2016
• Subjects: Bit error rate; Decoding; Detectors; Fixed-point arithmetic; Iterative decoding; Iterative receiver; K-Best decoder; Measurement; MIMO; Receivers; Turbo decoder; WARP platform
• DOI: 10.1109/ICT.2016.7500478

In recent years, iterative receiver has been widely considered since it is able to achieve high data rates and reliable communications for coded MIMO-OFDM systems. However, such a receiver is extremely challenging in practical implementation. In this paper, we present an efficient fixed-point arithmetic of iterative receiver based on low-complexity K-Best decoder in order to reduce the hardware costs in terms of area and execution time. The performance of fixed-point receiver is then evaluated with different modulation orders and channel models. Moreover, a testbed for MIMO-OFDM system using wireless open access research platform (WARP) is introduced in order to evaluate the performance of the receiver under real system conditions.