Belief Propagation Based Combined Decoding Scheme for LDPC-coded OFDM with PTS as PAPR Reduction

نویسندگان

  • Parag Joshi
  • Divya Sharma
چکیده

This paper proposes belief propagation based combined decoding scheme for low-density parity-check (LDPC)-coded orthogonal frequency-division multiplexing (OFDM) system with a peak-to-average power ratio (PAPR) reduction using the partial transmit sequence (PTS), which does not transmit PTS side information about the phase factors. Keywords— Belief Propagation (BP), Partial Transmit Sequence (PTS), Peak to Average Power (PAPR), Low Density Parity Check codes (LDPC), OFDM

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Increasing the Performance of OFDM Systems by PAPR Reduction in PTS Technique using Election Optimization Algorithm

Orthogonal Frequency Division Multiplexing (OFDM) is a useful technology in wireless communications that provides high-rate data transmission in multipath fading channels. The advantages of OFDM systems are the high spectral efficiency and strong resistance to frequency selective fading. In OFDM systems, a large number of sub-carriers are used to modulate the symbols causing the time-domain OFD...

متن کامل

Efficient Data Recovery scheme in PTS-Based OFDM systems with MATRIX Formulation

Partial transmit sequence (PTS) scheme is one of the peak-to-average power ratio (PAPR) reduction technique in OFDM systems. In the PTS scheme, in order to generate signals with low PAPR, one OFDM symbol is partitioned into disjointed sub-blocks, and each sub-block is multiplied by a phase factor. For data recovery, receivers must have side information (SI), e. g. , phase factors, from transmit...

متن کامل

PAPR reduction of OFDM signals using PTS: a real-valued genetic approach

The partial transmit sequences (PTS) scheme achieves an excellent peak-to-average power ratio (PAPR) reduction performance of orthogonal frequency division multiplexing (OFDM) signals at the cost of exhaustively searching all possible rotation phase combinations, resulting in high computational complexity. Several researchers have proposed using binary-coded genetic algorithms (BGA) PTS to redu...

متن کامل

An Efficient Scheme for PAPR Reduction of OFDM based on Selected Mapping without Side Information

Orthogonal frequency division multiplexing (OFDM) has become a promising method for many wireless communication applications. However, one main drawback of OFDM systems is the high peak-to-average power ratio (PAPR). Selected mapping (SLM) is a well-known technique to decrease the problem of high PAPR in OFDM systems. In this method, transmitter is obliged to send some bits named side informati...

متن کامل

A Modified PTS Combined with Interleaving and Pulse Shaping Method Based on PAPR Reduction for STBC MIMO-OFDM System

Multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system have been proposed in the recent past for providing high data-rate services over wireless channels. When combined with space time coding it provides the advantages of space-time coding and OFDM, resulting in a spectrally efficient wideband communication system. However, MIMO-OFDM system suffer with the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2014