Proceedings Article10.1109/VTCSPRING.2018.8417547
Low-Complexity Slot-Based Bit Loading for Multicarrier Wireless Systems
Youssef Iraqi,Arafat Al-Dweik,Mohamad Kalil +2 more
- 03 Jun 2018
- pp 1-6
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TL;DR: A low-complexity discrete adaptive bit loading algorithm is proposed for multicarrier systems with uniform power allocation operating in fading environments under the discontinuous bit rates assumption to maximize the overall throughput of the system while guaranteeing that the average bit error rate remains below a prescribed threshold.
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Abstract: In this paper, a low-complexity discrete adaptive bit loading algorithm is proposed for multicarrier systems with uniform power allocation operating in fading environments under the discontinuous bit rates assumption. The algorithm objective is to maximize the overall throughput of the system while guaranteeing that the average bit error rate (BER) remains below a prescribed threshold. The algorithm uses a signal-to-noise ratio (SNR) threshold to group adjacent subcarriers into slots where it allocates the same number of bits for all subcarriers within the slot. The grouping mechanism reduces the complexity of the bit-loading process with negligible throughput degradation as compared to optimal and near-optimal algorithms. In particular scenarios, the achieved complexity reduction may exceed 70% with throughput penalty that is less than 1% as compared to other well established bit loading algorithms.
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Citations
Direct Bit Loading With Reduced Complexity and Overhead for Precoded OFDM Systems
Fatma Kalbat,Arafat Al-Dweik,Youssef Iraqi,Husam Mukhtar,Bayan S. Sharif,George K. Karagiannidis +5 more
TL;DR: A new bit loading algorithm for P/I-OFDM is proposed that has substantially higher effective throughput and less computational complexity, when compared to bit loading in conventional OFDM systems.
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Adaptive Bit Loading With Reduced Computational Time and Complexity for Multicarrier Wireless Communications
Youssef Iraqi,Arafat Al-Dweik +1 more
TL;DR: This correspondence presents an efficient bit loading technique that enables reduction of the time and computational complexity requirements for mobile wireless multicarrier communications, while satisfying certain bit-error-rate constraints.
11
Discrete bit-loading for OFDM systems under BER-constraint and imperfect CSI
TL;DR: In this article, a low complexity discrete bit loading is proposed for OFDM systems over a fading channel and imperfect channel state information (CSI), where the available CSI at the transmitter can be pa...
1
Bit-filling Algorithm for Fast Subcarrier-Selecting in Ultrasonic Through-Metal Communication
XU Linsen,YANG Wei,TIAN Hongxian,WU Tao +3 more
TL;DR: A novel bit-filling algorithm for ultrasonic through-metal communication is proposed, reducing BER calculation complexity by 75% while achieving near-optimal data rates through efficient subcarrier selection and approximation of BER increment.
Efficient Information Transmission Using Smart OFDM for IoT Applications
Youssef Iraqi,Arafat Al-Dweik +1 more
TL;DR: A new OFDM configuration is proposed, denoted as OFDM-smart (OFDM-S), where superposition modulation is used to introduce transmit diversity to reduce the bit error rate (BER) while maintaining the spectral efficiency and bit rate fixed.
References
Optimal integer bit-loading for multicarrier ADSL systems subject to spectral-compatibility limits
Enzo Baccarelli,Mauro Biagi +1 more
TL;DR: This paper develops fast-implementable iterative greedy-type algorithms that converge to the desired optimal discrete loading of digital subscriber loop (DSL) multicarrier systems when constraints on both the total available energy and the maximum energies per carrier are active.
45
Error Probability Analysis and Applications of Amplitude-Coherent Detection in Flat Rayleigh Fading Channels
Arafat Al-Dweik,Youssef Iraqi +1 more
TL;DR: The obtained analytical and simulation results reveal that ACD can provide reliable SER as compared with noncoherent detection and an efficient blind channel estimation algorithm using ACD and hybrid modulation frame structures is presented.
33
Efficient Two-Stage Discrete Bit-Loading Algorithms for OFDM Systems
TL;DR: Analytical and numerical results reveal that the proposed algorithms converge to the optimal bit allocation with much lower computational complexities than existing optimal algorithms and outperform typical suboptimal algorithms in power efficiency with relatively higher computational complexities.
23
A Computationally Efficient Discrete Bit-Loading Algorithm for OFDM Systems Subject to Spectral-Compatibility Limits
TL;DR: A new low-complexity loading algorithm is presented that exploits the bit vector obtained by rounding the water-filling algorithm solution to the associated continuous-input rate maximization problem as an efficient initial bit vector of the Greedy algorithm.
A Systematic Approach to Jointly Optimize Rate and Power Consumption for OFDM Systems
TL;DR: Simulation results show that the proposed multiobjective optimization approach provides significant performance improvements over single objective optimization techniques presented in the literature, without incurring additional complexity.
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