Orthogonal frequency division multiplexing (OFDM) is a promising multicarrier modulation technique, which has many advantages, such as high efficiency spectrum, resistance to multipath fading. OFDM has become a key technology of the next generation communication system. However, the high peak to average power ratio (PAPR) limits the performance of the OFDM system. The PAPR reduction
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Orthogonal Frequency Division Multiplexing (OFDM) is one of the key technologies for next generation mobile communication, as its advantages such as high frequency usage, anti frequency selective fading etc. But its inherent weakness as high Peak-to-Average Power Ratio (PAPR) makes high request for the linearity of power amplifier in transmitter and receiver, and increases the
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With the communication system is toward to broadband, integrated, mobile technology, personal and intelligent, It is necessary to find a mobile communication system which have higher transportation speed. LTE communication system came out at this time, LTE project are mobile communications and broadband wireless access technologies and effective integration. OFDM and MIMO is the key
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Access Network is used for the interconnection between terminal users and wide area communication network by which users can get various communication services. However, the cost of implementation, installation and maintenance of access network is quite high. Thus, in condition of ensuring the normal communication, network operating business always implements layout of the access network
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In the uplink of LTE, the higher PAPR makes the power consumption of the amplifier higher, and results in the higher cost of the user terminal equipment, and the battery capacity limits its service time. Otherwise, the higher PAPR seriously affects other performances of the system. Because well-focused LTE had selected DFT-S-OFDM as the basic
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Orthogonal Frequency Division Multiplexing (OFDM) techniques have received a great deal of attention due to its high data rate transmission capability with high bandwidth efficiency in coping with multipath fading and has been widely used in digital audio (DAB), Digital Video Broadcasting (DVB), wireless local area network (WLAN) and other technical fields. As a result,
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Based on the analysis of the problem of high peak-to-average-power ratio (PAPR) of OFDM system, a technique of Tone Reservation (TR) to reduce PAPR is researched and implemented on FPGA in this thesis.At the beginning, the basic theory of OFDM technology is introduced. OFDM technology exploits the mutual orthogonal frequency subcarrier, which has the higher
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