THE PAPR REDUCTION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING USING NEW SLM
Author(s):
Ashish Bisen, Karuna Markam
Keywords:
Complementary Cumulative Distribution Function (CCDF), Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Selected Mapping (SLM).
Abstract
OFDM (Orthogonal Frequency Division Multiplexing) is a new raised modulation technique. Due to its more advantages in multipath fading channel e.g. vigorous against ISI, ICI and other advantages like best quality of service for various users, efficient usage of bandwidth it is recommended to be the modulation technique for 4G networks But along with all its advantages there are some disadvantages of Ofdm system is its high PAPR (Peak to Average Power Ratio) at the transmitter end and BER (Bit Error Rate) at the receiving end. Since OFDM is use only in the downlink networks of 4G. The present paper presents different PAPR reduction techniques and concludes an overall comparison of these Techniques. The present research paper proposed new selected mapping technique (SLM) by using the complex signal separated into real and imaginary parts, then select minimum PAPR signal of real and imaginary part and then minimum signals are combine. The proposed method is most efficient technique for PAPR reduction and enhance the performance in terms of BER, efficiency, less bandwidth requirement and complexity.
Article Details
Unique Paper ID: 142510

Publication Volume & Issue: Volume 2, Issue 2

Page(s): 225 - 231
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