Abstract
Combined Channel and Clipping Level Estimation in OFDM with MMSE Equalizer
Highlights
Orthogonal frequency division multiplexing (OFDM) is widely recognized as one of the key techniques for high data rate communications in wireless networks
Orthogonal Frequency Division Multiplexing (OFDM) has been recently applied wide in wireless communication systems, as a result of its high rate, transmission capability with high information measure, potency and its strength to multipath delay .Channel estimation is an important drawback in OFDM system
Channel estimation forms the center of any orthogonal frequency division multiplexing (OFDM) based mostly wireless communication receiver
Summary
Orthogonal frequency division multiplexing (OFDM) is widely recognized as one of the key techniques for high data rate communications in wireless networks. The critical problem of coding approach is that for an OFDM system with large number of subcarriers, either it encounters design difficulties or the coding rate becomes prohibitively low. Phase rotation is another approach to reduce PAPR, including selective mapping (SLM), and partial transmit sequence (PTS). Electronic devices and components suffer from process of aging, so even if this nonlinearity parameter was known at the beginning, it would not later These nonlinearity parameters will become unknown to the transmitter during time and there is an essential need to estimate them at the receiver side occasionally. We mainly investigate the channel estimation technology in OFDM system
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