Tight Upper Bound Performance of Full-Duplex MIMO-BICM-IDD Systems in the Presence of Residual Self-Interference

Abstract

In this paper, we derive a tight upper bound on the performance of a coded full-duplex multiple-input multipleoutput (MIMO)-based bidirectional transceiver. Iterative detection and decoding (IDD) are proposed to suppress the residual self-interference (SI) remaining after applying different stages of SI cancellation. IDD comprises an adaptive minimum meansquared error filter with log-likelihood ratio demapping, while the soft decoder by using soft-in soft-out decoding utilizes the maximum a posteriori algorithm. Furthermore, bit-interleaved coded modulation is considered in the presence of additive white Gaussian noise over MIMO frequency non-selective Rayleigh fading channels. Simulation results are presented to demonstrate the bit-error rate (BER) performance as a function of the signal-to-noise ratio showing a close match to the SI-free case for the proposed system. Furthermore, we validate our results by deriving a tight upper bound on the performance of the proposed system using rate-1/2 convolutional codes together with M-ary quadrature amplitude modulation, which asymptotically exhibits a close agreement with the simulated BER performance. Moreover, extrinsic information transfer chart analysis is used to investigate the convergence behavior of the proposed IDD receiver and to determine the number of iterations required for this convergence.

Noise Cancellation Employing Adaptive Digital Filters for Mobile Applications

“…The outcome of the simulation using Monte Carlo suggests that the proposed [18] gives robustness in different environments. With an intention to suppression of residual self-interference, Ahmed and Tsimenidis (2018) [19] have used adaptive mean squared error filter for iterative decoding/detective. Here, both the Rayleigh fading and AWGN channels were considered for modulation and its simulation outcomes high light the system performance with respect to BER, SNR as performance parameters.…”

Oblique projection: An interference mitigation for MIMO multihop full‐duplex relay

“…Several RSI cancellation techniques propose to enable the FD implementation . There are three main types of categorization of these techniques, ie, base‐band cancellation, radio frequency cancellation, and antenna isolation .…”