A Papr Reduction of Companded Sc-Fdma for 5g Uplink Communications
GBSR Naidu1, V. Malleswara Rao2
1GBSR Naidu, Department of ECE, GMR Institute of Technology, Rajam (A.P), India.
2V. Malleswara Rao, Department of ECE, GITAM Institute of Technology, Visakhapatnam (A.P), India.
Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 135-139 | Volume-8 Issue-7, May 2019 | Retrieval Number: F3918048619/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In cellular communication standards Long-Term Evolution (LTE), LTE-Advanced espoused single carrierfrequency division multiple access (SC-FDMA) which has been employed for uplink communication. Because of minor signal envelope vacillations in SC-FDMA has slight peak to average power ratio (PAPR) as well as bit error rate (BER) that is variety from OFDMA but there is scope to curtail the PAPR in SC-FDMA. The several techniques to curtail PAPR in single carrier FDMA sophisticated systems which are complex, or they essential side information to be communicated. The SC-FDMA receiver needs equalization which are zero forcing (ZF), minimum mean square equalizer (MMSE) to trade-off the complexity and performance. A projected nonlinear companding function (NCF) based on Exponential function performs better than Trapezoidal function, to reduce the PAPR and also BER under Q-PSK and 16-QAM of the Single Carrier- FDMA system. Computer simulations gives that the expected method decides better than the other functions like µ -law companding function.
Keyword: BER, MMSE, NCF, OFDMA, PAPR, SC-FDMA, ZF.
Scope of the Article: Wireless Communications.