Partial phase weighting selected mapping scheme for peak‐to‐average power ratio reduction in orthogonal frequency division multiplexing system

Utilization of Compressed Sampling for PAPR Reduction in OFDM IEEE-802.11a System

“…The reconstruction of the original signal 𝒙, or its representative in the 𝚿 domain 𝒔, requires the measurement vector 𝒚 ∈ ℝ 𝑀 and 𝚽 and 𝚿 matrices, after satisfying the aforementioned necessities. Reconstructing algorithm based on solving the underdetermined system of linear equations in (7) which has infinitely many solutions since 𝑀 < 𝑁 [25].…”

“…The reshaped BPSK bit-stream is then applied to the IFFT input, and at the IFFT output, the CS block reduces the number of transmitted symbol through compressively sampling the resulted matrix columns by a ratio of 1-to-10 using the mechanism of (7). It is then paralleled by a 25% cyclic prefix.…”

“…Based on Selected Mapping (SLM) strategy, Wang L. and Liu J. proposed in [7] a partial phase weighting SLM algorithm for PAPR reduction that reducing the complexity of the conventional SLM technique, which required a large number of IFFT stages and sending a Side Information (SI) to the receiver. In [8], a modified Hadamard-based SLM algorithm is proposed to overcome the transmitting of SI requirement in typical Hadamard-based PTS technique; which reduces the bandwidth efficiency.…”

Low complexity reconfigurable complex filters for PAPR reduction of OFDM signals: analysis, design and FPGA implementation

“…However, coding techniques are limited when the frame size is large and the cost of coding rate loss is very high. In addition, multiple signal representation techniques have been proposed, including PTS [13–15] and SLM [16–18]. These techniques do not suffer from in‐band distortion and out‐of‐band radiation, but they need a large number of inverse discrete Fourier transform (IDFT) calculations to find optimal phase sequences.…”

Complementary peak reducing signals for TDCS PAPR reduction

“…Moreover, the PAPR changes according to the spectrum mask, which also relates the PAPR problem with spectral conditions. Probability methods, such as partial transmit sequence (PTS) [11] and selective mapping (SLM) [12], combine different phase sequences with carriers (socalled frequency bins in TDCS) to generate different waveforms. Here the lowest PAPR is selected for transmission.…”