منابع مشابه
Reduction of Out-of-Band Power in SC-OFDM Systems
A new out-of-band power suppression method for SC-OFDM is proposed in this paper. In the proposed method, phase continuity between SC-OFDM blocks is preserved by inserting one static “anchor symbol”. As a result, out-of-band power emissions are reduced without BER performance degradation. Both simulation and experimental results indicate that reduction of out-of-band emissions up to 13dB can be...
متن کاملOut-of-band Power Reduction in Mimo Ofdm
One of the main disadvantages of orthogonal frequency-division multiplexing (OFDM) is its large peak-to-average power ratio (PAR). In case of nonlinear power amplification this fact causes undesired out-of-band radiation. In this paper PAR reduction schemes for multiple-antenna OFDM, in particular variants of selected mapping (SLM), are considered. Directed SLM (dSLM), where a joint PAR reducti...
متن کاملJoint Reduction of Peak-to-Average Power Ratio and Out-of-Band Power in OFDM Systems
The high peak-to-average power ratio is a major drawback of OFDM systems. Many PAPR reduction techniques have been proposed in the literature, among them a method that uses a subset of tones that do not carry any data, but are modulated such that the PAPR of the resulting time domain signal is minimized. Another problem of OFDM systems is the high out-of-band power caused by the sidelobes of th...
متن کاملNarrow Band Interference Reduction in OFDM-based Power Line Communication Systems
Broadband orthogonal frequency division multiplexing (OFDM) communication systems utilizing the low-voltage power supply network are exposed to different types of disturbances, which essentially determine the achievable transmission capacity. Narrow band interference (NBI), that can be caused by switching power supplies as welt as the ingress of short and medium wave radio transmitters located ...
متن کاملPeak to Average Power Ratio and Out of Band Radiation Reduction in OFDM Based Cognitive Radio
Orthogonal frequency division multiple-xing (OFDM) is an effective transmission method for cognitive radio system. This method provides high bandwidth and robustness against time dispersive channel. But OFDM inherits the high side lobe power and peak to average power ratio. High side lobe power of primary user (PU) distorts the signal of the secondary user (SU). In this paper we reduce the side...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2010
ISSN: 0975-8887
DOI: 10.5120/241-396