원문정보
초록
영어
Next generation wireless communication system uses one of the most competent multi-carrier transmission techniques known as Orthogonal Frequency Division Multiplexing (OFDM). OFDM has several characteristics such as providing greater immunity to multipath fading & impulse noise, eliminating Inter Symbol Interference (ISI) & Inter Carrier Interference (ICI) using a guard interval known as Cyclic Prefix (CP). But, OFDM suffers a serious drawback of high peak to average power ratio (PAPR) which is defined as the ratio of the peak power to the average power of OFDM Signal. A lot of researches are carrying on reducing this high PAPR. In this paper, we investigated the performances of different higher order modulations on our previously designed amplitude clipping & filtering method to reduce PAPR.
목차
1. Introduction
2. System Model
2.1. Mathematical Explanation of OFDM Signals
3. Synopsis of PAPR
4. Amplitude Clipping & Filtering
4.1. Limitations of Conventional Amplitude Clipping & Filtering
5. Proposed Clipping & Filtering Method
6. Design and Simulation Parameters
6.1. Simulation Results for PAPR Reduction
6.2. Simulation Results for BER Performance
References