Gi-Fi is one of the most important wireless technology that enhances our personal environment, ei... more Gi-Fi is one of the most important wireless technology that enhances our personal environment, either work or private, by means of networking or a variety of personal and wearable devices within the space and with the outside world. In optical fibers, Gi-Fi played an important role for its high speed large files transfers within seconds. It is a scalable wireless platform for constructing alternative and complementary broadband networks and it operates at 60 GHz on the CMOS process. It will also allow the transfer of wireless audio and video files within a range of 10 meters. The installation of cables in optical fiber caused a greater difficulty and thus led to wireless access. Initially wireless technology includes infrared which was a very slow technology further inventions were done to make wireless technology a better for communication and the invention of Bluetooth, WI-MAX moved wireless communication to a new era.
In the latest development of Orthogonal Frequency Division Multiplexing (OFDM) communication syst... more In the latest development of Orthogonal Frequency Division Multiplexing (OFDM) communication system, the system performance can be distracted by the Frequency Offsets (FOs) which can demolish the orthogonality of the subcarriers, and hence leads to a number of impairments in the received signal, thereby making its detection incorrect. In this paper, a new threshold-based frequency offset estimation algorithm for Orthogonal Frequency Division Multiplexing (OFDM) systems is proposed. Through a detailed analysis and simulation over AWGN channel, it has been shown that the proposed method shows good performance, i.e., it offers low error variance as the SNR (signal to noise ratio) increases.
The Performance of the Orthogonal Frequency Division Multiplexing (OFDM) systems degrade due to D... more The Performance of the Orthogonal Frequency Division Multiplexing (OFDM) systems degrade due to Doppler frequency or frequency drift between transmitter and receiver oscillator which causes frequency offset and hence leads to a number of impairments in the received signal, thereby making its detection incorrect. In this paper, a threshold-based frequency offset estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems is further analyzed. The algorithm shows robust performance in the presence of timing offset. The threshold used in correlation and coherence phase bandwidth lowers the computation complexity when compared with the existing schemes. Through a detailed analysis and simulation over AWGN channel, it has been shown that the scheme analyzed maintains the same level of estimation performance with lower complexity than the existing schemes. KeywordsFrequency offset, OFDM, synchronization, coherence phase bandwidth (CPB)
Gi-Fi is one of the most important wireless technology that enhances our personal environment, ei... more Gi-Fi is one of the most important wireless technology that enhances our personal environment, either work or private, by means of networking or a variety of personal and wearable devices within the space and with the outside world. In optical fibers, Gi-Fi played an important role for its high speed large files transfers within seconds. It is a scalable wireless platform for constructing alternative and complementary broadband networks and it operates at 60 GHz on the CMOS process. It will also allow the transfer of wireless audio and video files within a range of 10 meters. The installation of cables in optical fiber caused a greater difficulty and thus led to wireless access. Initially wireless technology includes infrared which was a very slow technology further inventions were done to make wireless technology a better for communication and the invention of Bluetooth, WI-MAX moved wireless communication to a new era.
In the latest development of Orthogonal Frequency Division Multiplexing (OFDM) communication syst... more In the latest development of Orthogonal Frequency Division Multiplexing (OFDM) communication system, the system performance can be distracted by the Frequency Offsets (FOs) which can demolish the orthogonality of the subcarriers, and hence leads to a number of impairments in the received signal, thereby making its detection incorrect. In this paper, a new threshold-based frequency offset estimation algorithm for Orthogonal Frequency Division Multiplexing (OFDM) systems is proposed. Through a detailed analysis and simulation over AWGN channel, it has been shown that the proposed method shows good performance, i.e., it offers low error variance as the SNR (signal to noise ratio) increases.
The Performance of the Orthogonal Frequency Division Multiplexing (OFDM) systems degrade due to D... more The Performance of the Orthogonal Frequency Division Multiplexing (OFDM) systems degrade due to Doppler frequency or frequency drift between transmitter and receiver oscillator which causes frequency offset and hence leads to a number of impairments in the received signal, thereby making its detection incorrect. In this paper, a threshold-based frequency offset estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems is further analyzed. The algorithm shows robust performance in the presence of timing offset. The threshold used in correlation and coherence phase bandwidth lowers the computation complexity when compared with the existing schemes. Through a detailed analysis and simulation over AWGN channel, it has been shown that the scheme analyzed maintains the same level of estimation performance with lower complexity than the existing schemes. KeywordsFrequency offset, OFDM, synchronization, coherence phase bandwidth (CPB)
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Papers by Alka Sonkar