Performance Comparison between SCFDMA and OFDMA in 4G-LTE under Two Subcarrier Mapping within Variable Channel Cases
Baha Ali Nasir

Assist lecturer. Baha Ali Nasir, Department of Electronic Techniques, Institute of Technology-Baghdad, Middle Technical University, Baghdad, Iraq.
Manuscript received on 15 February 2016 | Revised Manuscript received on 25 February 2016 | Manuscript Published on 28 February 2016 | PP: 1-10 | Volume-5 Issue-3, February 2016 | Retrieval Number: C4381025316/16©BEIESP
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Abstract: The mobile communication is occupied by extra and extra facilities with information speed from little Kilobits per second reach to numerous Megabits per second. Amain choice in the communication system is the select of the multiple access structures. A selection may be the “Orthogonal Frequency Division Multiple Access” (OFDMA). Even with moreprofitsingreatflowin formation facilities, SCFDMA has bring excessive care as an smart substitution to OFDMA and nowrecommendedinportable uplink communications in fourth generation (4G) “Long Term Evolution” (LTE).in this paper the comparison between these two techniques is done in order to prove the powerful points of using the SCFDMA in LTE under two subcarrier mapping that are localized and interleaved style in dual channel kinds that are ITU and LTE channels. The results demonstrate that the SCFDMA provides the lesser “bit error rate” as compare to OFDMA in all cases of channels. Also the interleaved mode gives lower BER than localized mode.
Keywords: OFDMA, SCFDMA, 4G, LTE, BER, ITU. 

Scope of the Article: Mobile Networks & Wireless LAN