Blind Selected Mapping with Side Information Estimation Based on the Received Pilot Signal

Abstract

Blind selected mapping (BSLM) is a technique to reduce the peak to average power ratio (PAPR) of OFDM by using a set of scrambling sequences. Since the side information (SI) on the scrambling sequence selected by the transmitter is not directly sent to the receiver in BSLM, the SI needs to be estimated by the receiver. In this paper, a BSLM scheme that applies a new SI estimation approach is proposed. The proposed BSLM scheme estimates the SI by selecting the minimum of the candidate metrics that are computed with the received pilot signal, the pilot symbol sequence, and the scrambling sequences. It is shown by simulation that the proposed BSLM scheme yields better SI error rate (SIER) and bit error rate (BER) performance and lower implementation complexity than four traditional BSLM schemes.

Wavelet Based Multicarrier Modulation (MCM) Systems: PAPR Analysis

“…A prominent technique known as Partial Transmit Sequence (PTS) has been first introduced in [7]. This technique categorized as signal scrambling offers big potential for further exploration as explored in the works [8][9][10][11].…”

A Proposed Channel Estimation Based on Enhanced Sub-carrier Index Modulation and Packet-Discrete Wavelet Transform to Minimize Bit Error Rate

“…[6] also offered a per-survivor strategy that used a bank of Kalman filters for channel estimation. The ideal training sequence for the linear channel estimator that minimizes the channel estimation MMSE is demonstrated to be of length per transmit antenna in [7]. Methods for blind/semi-blind channel estimation can be studied however, they require large data samples and have a high level of complexity [8].…”

Maximal Minimum Hamming Distance Codes for Embedding SI in a Data based BSLM Scheme for PAPR Reduction in OFDM

“…SLM is a well-known distortion-less PAPR reduction technique; however, it requires sending side information (SI) for the receiver to be able to retrieve the original signal. To solve this problem, many blind SLM (BSLM) schemes have been proposed in the literature (Jayalath and Tellambura, 2002;Pezeshk and Khalaj, 2002;Baxley and Zhou, 2005;Jayalath and Tellambura, 2005;Han et al, 2006;Chen and Zhou, 2006;Alsusa and Yang, 2008;Han et al, 2008;Joo et al, 2009;Le Goff et al, 2009;Hong et al, 2010;Park et al, 2011;Li et al, 2011;Badran and El-Helw, 2011;Eom et al, 2012;Joo et al, 2012;El-Helw et al, 2012;Hong et al, 2013;Ji and Ren, 2013;Elhelw and Badran, 2015;Ji et al, 2015;Yoon et al, 2018;Goel and Sidhu, 2020). BSLM, in general, embeds SI in an OFDM signal by utilizing noise margins instead of dedicated subcarriers to eliminate data rate waste due to SI.…”