Implementation of Polar Codes in 5G Systems with Different Waveform Modulations by Using USRP

Authors : Marwan DHUHEİR, Sıtkı ÖZTÜRK

Pages : 1144-1153

Doi:10.16984/saufenbilder.536540

View : 29 | Download : 10

Publication Date : 2019-12-01

Article Type : Research Paper

Abstract :Long Term Evolution insert ignore into journalissuearticles values(LTE); is an access technique that is used in radio networks. LTE provides high data bandwidth in transmitting data by providing flexibility against noise and interference. Orthogonal Frequency Division Multiplexing insert ignore into journalissuearticles values(OFDM); technique uses the FDM insert ignore into journalissuearticles values(Frequency Division Multiplexer); modulation technique to increase the amount of carried information over the wireless network. The OFDM signal is transmitted to the receiver at different frequencies which they are orthogonal to each other by dividing the bandwidth of a signal into smaller sub-carriers. Recently, the use of polar codes as a coding scheme in the new generation 5G systems has come to the communications markets. Polar codes as a channel coding scheme are a promising technique for the future because it is the first codes that reach Shannon capacity limit. The cyclical prefix – OFDM insert ignore into journalissuearticles values(CP-OFDM);, which is used in 4G systems, performs well in many aspects, however, it has much weakness that make the researches look for a new modulation technique to be used in 5G systems. Filtered–OFDM insert ignore into journalissuearticles values(F-OFDM); is considered one solution to the problems appeared in CP–OFDM. In this paper, the differences between CP-OFDM and F-OFDM regarding advantages and disadvantages of each type are studied in details. The comparison between the two modulations waveforms are done by studying their Error Vector Magnitude insert ignore into journalissuearticles values(EVM); that deals with measuring the accuracy of the received signals. Furthermore, the comparison between the two modulations waveforms with polar codes in the USRP B210 radio are applied to make our work more practical. 
Keywords : Polar Codes, USRP, OFDM, F OFDM