PAPR reduction by pulse shaping using Nyquist linear combination pulses
نویسندگان
چکیده
منابع مشابه
OFDM System PAPR Reduction Using Pulse Shaping
The peak to average power ratio of the time domain envelope is an important parameter at the physical layer of the communication system using OFDM signalling. The signals must maintain a specified average energy level in the channel to obtain the desired Bit-errorrate. The peak signal level relative to that average defines the maximum dynamic range that must be accommodated by the components in...
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Orthogonal Frequency Division Multiplexing (OFDM) is an attractive modulation and multiple access techniques for channels with a nonflat frequency response, as it saves the need for complex equalizers. It can offer high quality performance in terms of bandwidth efficiency, robustness against multipath fading and cost-effective implementation. However, its main disadvantage is the high peak-to-a...
متن کاملPerformance Improvement in OFDM System by PAPR Reduction Using Pulse Shaping Technique
Orthogonal Frequency Division Multiplexing (OFDM) is an efficient method of data transmission for high speed communication systems. However, the main drawback of OFDM system is the high Peak to Average Power Ratio (PAPR) of the transmitted signal. OFDM consist of large number of independent subcarriers, as a result of which the amplitude of such signal can have high peak values. Pulse shaping u...
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Single Carrier Frequency Division Multiple Access (SC-FDMA) is proposed for uplink transmission of Long Term Evolution Advanced (LTE-A) due to its lower Peak to Average Power Ratio (PAPR) compared to Orthogonal Frequency Division Multiple Access (OFDMA). In this paper, a comparison is introduced between its two subcarrier mapping schemes, Localized-FDMA (LFDMA) and Interleaved-FDMA (IFDMA), in ...
متن کاملPAPR Reduction in OFDM Systems Using Constellation Shaping
This work considers the problem of Peak to Average Power Ratio (PAPR) reduction in an Orthogonal Frequency Division Multiplexing system. We design a cubic constellation, called Hadamard constellation, whose boundary is along the bases defined by the Hadamard matrix in the transform domain and then we further reduce the PAPR by applying the Selective Mapping technique. The encoding algorithm is ...
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ژورنال
عنوان ژورنال: IEICE Electronics Express
سال: 2012
ISSN: 1349-2543
DOI: 10.1587/elex.9.1534