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oe1(光电查) - 科学论文

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  • [IEEE 2018 IEEE 5G World Forum (5GWF) - Silicon Valley, CA, USA (2018.7.9-2018.7.11)] 2018 IEEE 5G World Forum (5GWF) - Linear GFDM: A Low Out-of-band Emission Configuration for 5G Air Interface

    摘要： This paper explores the ?exibility of generalized frequency division multiplexing (GFDM) for achieving the same performance as ?lter bank multicarrier (FBMC). We present a GFDM con?guration where the good spectral containment of FBMC is also achieved through a modi?cation in the GFDM transmission scheme. For evaluating the scheme’s performance, we estimate the bit error ratio (BER) under three channel models: i) pure additive Gaussian AWGN; ii) time-invariant frequency-selective; iii) time-variant frequency-selective (doubly dispersive). The spectral containment is measured through the power spectral density. Furthermore, the complementary cumulative distribution function (CCDF) of the peak-to-average power ratio (PAPR) is also estimated. The Linear GFDM waveform shows identical performance when compared to FBMC in the above test scenarios.

    关键词： GFDM,wireless communications,FBMC,non-orthogonal waveforms,enhanced mobile broadband,5G

    更新于2025-09-23 15:21:21

  • Minimum BER Power Allocation for Space-Time Coded Generalized Frequency Division Multiplexing Systems

    摘要： In this letter, we propose a minimum BER (MBER) power allocation (PA) method for generalized frequency division multiplexing (GFDM) systems with zero forcing (ZF) receiver. The MBER PA of GFDM systems is solved through minimizing noise enhancement factor (NEF) at the receiver. Additionally, theoretical BER and achievable rate (AR) expressions are derived with the proposed PA strategy. Furthermore, we also generalize the MBER PA strategy in space-time coded (STC) GFDM systems. Simulation results show that, no matter GFDM or STC GFDM systems, the proposed PA strategy could improve BER and AR performances simultaneously.

    关键词： minimum BER,generalized frequency division multiplexing (GFDM),space-time code,power allocation (PA),achievable rate (AR)

    更新于2025-09-04 15:30:14