Reducing the peak to average power ratio in MIMO OFDM systems

Hassaneen, Saly S.; Soliman, Heba Y.; Elbarbary, Khairy A.; El-Hennawy, A.

doi:10.1109/icenco.2013.6736488

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…Simulation results of the PTS performance with circular shifting using MATLAB were presented in detail in our previous work 14,15 without VHDL implementation. The simulation parameters used were N = 64 subcarriers, the number of transmit antennas Nt = {1, 2, 4} and quadrature phase-shift keying (QPSK) modulation.…”

Section: Cs-pts For Mimo Ofdm Systemsmentioning

confidence: 99%

“…The performance was measured mainly based on the complementary cumulative distribution function (CCDF) of the overall PAPR. The results built on MATLAB simulations in our previous work 14,15 showed that the CS-PTS is the best method for making a tradeoff between PAPR reduction performance and computational complexity.…”

Section: Cs-pts For Mimo Ofdm Systemsmentioning

confidence: 99%

“…After obtaining promising simulation results for the CS-PTS system, 14,15 in this study, the CS-PTS was implemented on an FPGA and tested using hardware simulation. The design was compiled and converted into a VHDL and bitstream using the Xilinx system generator.…”

Section: Vhdl Implementationmentioning

confidence: 99%

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VHDL implementation of circular shifting‐partial transmit sequence in MIMO OFDM systems

Abdel-Atty

Hassaneen

Soliman

2022

Int J Communication

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One of the basic issues in orthogonal frequency-division multiplexing (OFDM) frameworks is the peak-to-average power ratio (PAPR). There are several PAPR reduction methods available. The partial transmit sequence (PTS) technique is considered one of the superior techniques for overcoming this issue.In this study, an efficient VHSIC hardware description language VHDL implementation of the PTS design utilising roundabout circular shifting CS was planned. The proposed structured method was designed as a real-time prototype circuit over a field programmable gate array (FPGA) utilising the VHDL language. The implementation results of the prototype circuit in terms of the resources used in the FPGA using the Xilinx synthesis tool on the Virtex-5 board for SISO, 2 Â 2 MIMO and 4 Â 4 MIMO models for N-IFFT 64 and 256 points are presented. The structured framework effectively combined to be a compact framework with low intricacy and high speed. Testing of the implemented circuit verified its functionality. A comparison of our proposed CS-PTS scheme with previously used PTS schemes, such as the subblock scheme, showed that our proposed method is superior in terms of hardware complexity reduction.

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Section: Cs-pts For Mimo Ofdm Systemsmentioning

confidence: 99%

Section: Cs-pts For Mimo Ofdm Systemsmentioning

confidence: 99%

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VHDL implementation of circular shifting‐partial transmit sequence in MIMO OFDM systems

Abdel-Atty

Hassaneen

Soliman

2022

Int J Communication

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“…2) PAPR reduction techniques in SM-OFDM system: The major disadvantage of MIMO-OFDM system is having high levels of PAPR [70]. In the literature, several algorithms proposed to reduce PAPR in SM-OFDM systems.…”

Section: Papr Reductionmentioning

confidence: 99%

Modulation Options for OFDM-Based Waveforms: Classification, Comparison, and Future Directions

Jaradat¹,

Hamamreh²,

Arslan³

2019

IEEE Access

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This paper provides a comparative study on the performance of different modulation options for orthogonal frequency division multiplexing (OFDM) in terms of their spectral efficiency, reliability, peak-to-average power ratio, power efficiency, out-of-band emission, and computational complexity. The modulation candidates are classified into two main categories based on the signal plane dimension they exploit. These categories are: 1) 2-D signal plane category including conventional OFDM with classical fixed or adaptive QAM modulation and OFDM with differential modulation, where information is conveyed in changes between two successive symbols in the same subcarrier or between two consecutive subcarriers in the same OFDM symbol and 2) 3-D signal plane category encompassing: a) index-based OFDM modulation schemes which include: i) spatial modulation OFDM, where information is sent by the indices of antennas along with conventional modulated symbols and ii) OFDM with index modulation, where the subcarriers' indices are used to send additional information; b) number-based OFDM modulation schemes which include OFDM with subcarrier number modulation, in which number of subcarriers is exploited to convey additional information; and c) shape-based OFDM modulation schemes which include OFDM with pulse superposition modulation, where the shape of pulses is introduced as a third new dimension to convey additional information. Based on the provided comparative study, the relationship and interaction between these different modulation options and the requirements of future 5G networks are discussed and explained. This paper is then concluded with some recommendations and future research directions.

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