PAPR reduction for LDPC coded OFDM systems using binary masks and optimal LLR estimation

OFDM and its Major Concerns: A Study with Way Out

“…Besides these PAPR reduction techniques, some hybrid methods are also available in the literature [111][112]. These methods combine one or more than two techniques of P APR reduction like clipping with coding, SLM with coding, pre-coding with clipping etc.…”

PAPR Reduction for OFDM/OQAM Signals Using Offset-Symbols Joint SLM Method

“…Since the OFDM/OQAM signals are overlapped with adjacent data blocks caused by the bank of filters, the general definition of PAPR for OFDM systems is no longer applicable to OFDM/OQAM systems [15]. Let [ ,…”

“…Then, U 2 candidate signals of each data block are added to the previous signal with U 2 KT CAs in (14). Finally, NU 2 KT 2 operations are needed in (15) 5MNU KT , respectively. The complexity of the J-SLM scheme is summarized in the first line of Table I.…”

“…Various schemes of OFDM signals have been proposed to tackle the PAPR problem, such as clipping [7], Tone Reservation (TR) [8], Partial Transmit Sequence (PTS) [9], Selective Mapping (SLM) [10], Active Constellation Extension (ACE) [11], among others schemes [12]- [15]. However, the signals of adjacent data blocks are independent in the OFDM system, while they overlap with each other in the OFDM/OQAM system.…”

Adaptive ABC Algorithm Based PTS Scheme for PAPR Reduction in MIMO-OFDM

“…In any case, in the technique a foreseen PAPR decreasing which have a lot of iterations is mandatory. To diminish the high PAPR of the OFDM, various PAPR lessening frameworks containing the partial transmit sequence (PTS), selective mapping (SLM), and nonlinear companding have been anticipated [4,5]. The partial transmit sequence (PTS) is a deception less framework on the premise of joining signal sub blocks that are phase moved by consistent phase elements.…”