Results 81 to 90 of about 25,708 (247)
Peak-to-average power ratio reduction in OFDM systems using smoothing technique [PDF]
, 2009 This paper presents a new peak-to-average power ratio (PAPR) reduction technique by smoothing the power components of OFDM signals. The smoothing technique only adds a simple process to the existing OFDM signal processing.
Al-Azzo, Wisam F. +4 more
core +1 more source
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2552-2563, December 2024.DOA estimation for wideband multiple‐input‐multiple‐output (MIMO) radar without secondary data is investigated in this paper. The authors establish a signal model for wideband MIMO radar system, and propose a DOA estimation algorithm, named sparse learninng via iterative minimization for wideband MIMO radar.
Jiong Xiao, Bo Tang
wiley +1 more source
Chip Interleaving and its Optimization for PAPR Reduction in MC-CDMA [PDF]
, 2007 This paper analyzes the usability of peak to average power ratio (PAPR) reduction in multicarrier code division multiple access (MC-CDMA) by the chip interleaving optimization. This means chip position formatting to PAPR minimization.
Fedra, Z., Marsalek, R., Sebesta, V.
core +1 more source
Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization
, 2017 Orthogonal frequency division multiplexing (OFDM) and single-carrier frequency domain equalization (SC-FDE) are two commonly adopted modulation schemes for frequency-selective channels. Compared to SC-FDE, OFDM generally achieves higher data rate, but at
Lie, Joni Polili +3 more
core +1 more source
Joint Tomlinson-Harashima precoding and optimum transmit power allocation for SC-FDMA [PDF]
, 2010 Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard.
Nix, AR, Noune, MB
core +2 more sources
IET Wireless Sensor Systems, Volume 14, Issue 6, Page 265-292, December 2024.Abstract Emerging wireless communication networks, exemplified by the evolution from 5G to subsequent technologies, necessitate extensive connectivity among myriad devices to fuel the ongoing technological progress. However, the magnitude of this network demands an extensive power source, requiring an advanced and sustainable system to be practically ...
Shweta Singh, Manish Kumar, Rahul Kumar
wiley +1 more source
Polarized APSK modulation system with polymorphic SC signals
IET Communications, Volume 18, Issue 18, Page 1282-1291, November 2024.This paper presents polarized amplitude and phase shift keying modulation that is capable of lowering peak‐to‐average power ratio and achieving bit error rates that are lower than those of M$M$‐ary quadrature amplitude modulation, beyond 10 dB of SNR.
Peter O. Akuon
wiley +1 more source
Optimization of Tone Reservation-Based PAPR Reduction for OFDM Systems [PDF]
Radioengineering, 2017 A major drawback of orthogonal frequency division multiplexing (OFDM) is its high peak-to-average power ratio (PAPR). Tone reservation (TR) is one of the numerous methods for reducing the PAPR.
B. Horvath, B. Botlik
doaj
ETRI Journal, 2020 Noncontiguous orthogonal frequency division multiplexing (NC‐OFDM)‐based cognitive radio (CR) systems achieve highly efficient spectrum utilization by transmitting unlicensed users' data on subcarriers of licensed users’ data when they are free. However,
Sravan Kumar Kaliki +2 more
doaj +1 more source
IET Radar, Sonar &Navigation, Volume 18, Issue 10, Page 1848-1858, October 2024.The authors propose an ISAC waveform that has a 0dB peak‐to‐average power ratio PAPR by combining a Golay complementary sequence with a constant envelope orthogonal frequency‐division multiplexing (CE‐OFDM). By adjusting the phase modulation parameters, this waveform allows for a trade‐offs between communication and sensing capabilities.
Xinyu Chen +4 more
wiley +1 more source