Pairwise error probability

About: Pairwise error probability is a research topic. Over the lifetime, 1150 publications have been published within this topic receiving 30639 citations.

Superposition coding for cooperative BICM-OFDM systems

Abstract: In this paper, we study a cooperative diversity scheme for wireless systems based on symbol level superposition coding and the combination of bit-interleaved coded modulation (BICM) and orthogonal frequency division multiplexing (OFDM). The considered system comprises multiple sources, a single relay, and one common destination. The relay decodes the signal received from all sources over orthogonal channels, linearly combines the decoded symbols, and forwards the combined symbols to the destination. A simple cooperative maximum-ratio combining scheme is used at the destination which can successfully exploit the full spatial and frequency diversity offered by the channel for arbitrary numbers of sources and arbitrary linear modulation schemes. To gain insight for system design, we derive a closed-form upper bound for the asymptotic worst-case pairwise error probability and the diversity gain of the considered superposition-coded cooperative diversity (SCCD) scheme for BICM-OFDM systems. The diversity gain is a function of the free distance of the code and the frequency diversity of the involved links, but is independent of number of sources. Simulation results corroborate the derived analytical results and confirm that SCCD schemes enjoy better coding and diversity gains compared to Galois field network coding for the considered system and may be more attractive for application in wireless cooperative networks.

An investigation of novel cooperation protocol over Nakagami-m fading channels

Abstract: We have explored two phase single and multi-relay cooperative communication protocol over Nakagami-m fading channel conditions A close form pairwise error probability (PEP) formulation of C(0) by utilizing moment generating function (MGF) approach over Nakagami-m fading channel conditions has been given in the manuscript We have utilized multiple-input multiple-output (MIMO) in conjunction with space-time coding (STBC) based selective decode and forward (SDF) cooperation protocol Firstly, simulation results are compared for maximum likelihood decoding (ML) and near-ML decoding for Alamouti coded selective decode forward protocol having single relay Afterward, asymptotic PEP bound over Nakagami-m fading for the multi relay C(0) convention has been inferred Additionally, the end to end performance at optimal source and relay power allocation has been analyzed for single relay and in addition, multi-relay C(0) protocol We have shown simulations for checking the accuracy of our determined analytical results From the simulation results, we can state that we have achieved the full diversity order (DO)

An Information Transmission Scheme for RIS-Aided Wireless Communication Network

Abstract: This paper introduces a reconfigurable intelligent surface (RIS)-aided wireless communication network, where an RIS simultaneously transmits the information and reflects an impinging radio frequency signal. Moreover, the RIS explicitly embeds its information bits in the discrete phase shifts of reflecting elements, which are selected from the reflection phase modulation (RPM) constellation. Further, access point (AP) exploits the pulse amplitude modulation (PAM) constellation to convey its information bits. Both RIS and AP independently transmit their data to the receiver using RPM and PAM symbols. In addition, joint decoding of RPM and PAM constellations symbols is performed using a maximum likelihood (ML)-detector, and a tight upper bound of the average bit error rate (ABER) is presented. A unified analytical framework of the average pairwise error probability over double Rayleigh fading channels is derived, which is followed by the ABER expression. Furthermore, it is noticed from the numerical results that the proposed scheme attains high data rates with remarkably lower error rates in very low SNR regime.

An exact union bound on the BER for the combined system of ideal beamforming and Alamouti's STBC

Abstract: The simplest Alamouti's space-time block code is coupled with a larger number of transmit antennas via ideal beam-forming to achieve higher diversity gain compared to the conventional Alamouti scheme with only two transmit antennas. An exact union bound on the bit error rate (BER) is derived for the combined system of ideal beamforming and Alamouti's space-time block code based on the exact calculation of the pairwise error probability (PEP) for the same system. To calculate the exact PEP, the Gauss-Chebyshev quadrature rule and the moment-generating function (MGF) approach is adopted. The analysis is carried out for the slow Rayleigh flat fading channels and binary phase shift keying (BPSK) modulation.

Cramer-Rao Bound Approach and Error Performance for Spatial Modulation over Beckmann Fading Channels

Abstract: Spatial modulation (SM) is a promising low-complexity alternative to the state-of-art multiple-input multiple-output (MIMO) schemes due to its unique transmission approach. In this work, the impact of channel imperfections on the performance of SM-MIMO systems are investigated over generalized Beckmann fading channels, which introduce a versatile multipath fading model that includes several distributions such as Ricean, Nakagami-m and Beaulieu-Xie, as special cases. Specifically, an optimum maximum likelihood detection (MLD) method is proposed and the average pairwise error probability (APEP) is calculated by analytical derivations. Cramer-Rao bound approach is utilized for further improvement on decreasing the deteriorating effects that rise from estimation errors. The obtained results, confirmed by computer simulations, provide a comprehensive perspective to the performance of the SM-MIMO wireless communication systems.