Performance of BICM-ID with Signal Space Diversity

Abstract

Abstract-This paper presents a performance analysis of bitinterleaved coded-modulation with iterative decoding (BICM-ID) and complex N -dimensional signal space diversity in fading channels to investigate its performance limitation, the choice of the rotation matrix and the design of a low-complexity receiver. The tight error bound is first analytically derived. Based on the design criterion obtained from the error bound, the optimality of the rotation matrix is then established. It is shown that using the class of the optimal rotation matrices, the performance of BICM-ID systems over a Rayleigh fading channel approaches that of the BICM-ID systems over an AWGN channel when the dimension of the signal constellation increases. Furthermore, by exploiting the sigma mappings for M -QAM constellations, a very simple suboptimal, but yet effective iterative receiver structure suitable for signal constellations with large dimensions is proposed. Simulation results in various cases and conditions indicate that the proposed receiver can achieve the analytical performance bounds with low complexity.

An efficient MIMO scheme with signal space diversity for future mobile communications

“…Gaussian noise random variable n l k . Thus, by using the Monte Carlo simulation techniques, we can estimate the expectation values of Equations 28 and 29 by ergodicity of (c k , H k , n l k ), where P (y l |x l , λ l ) can be calculated as Equation 12. As for complex-valued QAM signals, the optimum rotation angle usually is different from the value of the real-valued signals, and we can get it by maximizing AMI.…”

“…Kiyani and J.H. Weber studied the rotated-MPSK SISO BICM-ID system [10,12], which focused on two-dimensional multiphase shift keying (MPSK) scheme. In [11], the performance analysis of BICM-ID with SSD in fading channels is presented.…”

Iterative Detection Techniques for Clipped OFDM Systems

“…The operation in (10) will be referred to as the SCM signaling scheme in this paper. (Note that the SCM scheme can also be applied to BICM [15].) Given the a priori LLRs {γ k } from the DEC, the random…”

Improving 3D-Turbo Code's BER Performance with a BICM System over Rayleigh Fading Channel

“…By the rotation, the signal diversity is achieved [6]; as a result, the performance over Rayleigh fading channel is effectively improved [7]. In this paper, a BICM architecture is constructed by combining 3D-Turbo code and rotated mapping QAM.…”