This project is design based on the papers "OFDM for 5G: Cyclic Prefix versus Zero Postfix, and Filtering versus Windowing". Owing to its low spectral decay rate, conventional orthogonal frequencydivision modulation (OFDM) is unsuitable for supporting asynchronous access, userspecific subcarrier spacing and symbol period, and spectrum aggregation, all of which are envisioned for fifthgeneration (5G) cellular networks. This has spurred recent work on designing new multicarrier waveforms for 5G. In this project, a unified signal model for OFDM is presented, which encompasses variants employing either a cyclic prefix (CP) or a zero postfix (ZP) as the guard interval technique with enchanced FFT size. Matlab program is devloped based on the below design specifications, Design Process
 Generate random message(data) of size 4bit to apply for the scrambling process
 Convolutional encoding process (1/2 code rate)
 Interleaving and Modulation process
 16 QAM Modulation is used
 Serial to Parallel conversion
 Get OFDM symbol size of 4096 and apply with IFFT process
 Add cyclic prefix (288) to OFDM process
 ChannelAWGN and Rayleigh
 Remove cyclic prefix and channel estimate apply FFT process
 Demodulation Process
 Deinterleaving
 Convolutional decoding process and descrambler to get the original message (data)
Data subcarriers is 4000 and pilot subcarriers is 96. If we increase the modulation to 64 or 128 QAM then data rate will be increased. Data rate per frame achieved in current design is 16kb(4096*4).
Reference Paper1: OFDM for 5G Cyclic Prefix versus Zero Postfix, and Filtering versus Windowing
Author’s Name: Sivarama Venkatesan and Reinaldo A. Valenzuela
Source: IEEE ICC 2016  Wireless Communications Symposium
Year:2016
Reference Paper2: Reconfigurable NCOFDM Processor for 5G Communications
Author’s Name: Mario Lopes Ferreira and Joao Canas Ferreira
Source: IEEE 13th International Conference on Embedded and Ubiquitous Computing
Year:2015
Request design files for academic purpose,contact sales@verilogcourseteam.com.
SIMULATION VIDEO DEMO
PREVIOUS PAGENEXT PAGE
