Informatics Publishing Limited

Rubina ¹, D. P. Chechi ¹

Affiliations
1 Department of ECE, H.C.T.M, Kaithal, IN

Abstract

Papr reduce the efficiency of system in MC-CDMA so we have to use PTS to recover from this. In this paper, Partial Transmit Sequence technique is used, which uses suboptimal algorithms&their performances are compared. For their performance evaluating PAPR reduction scheme is CCDF of the PAPR of transmitted continuous time signal. BPSO has better PAPR reduction capability than BFO Algorithm on the basis of performances using different modulation schemes.

Keywords

MC-CDMA, PTS, BPSO, BFO.

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Rubina ¹, D. P. Chechi ¹

Affiliations
1 Department of ECE, HCTM, Kaithal, IN

Abstract

The most favorable technique for high speed data transmission is Multicarrier Code Division Multiple Access. The MC-CDMA signals, which are characterized through PAPR, which can reduce the efficiency of the system. In this paper, we have to reduce the PAPR of an MC-CDMA system using PTS (Partial Transmit Sequence) through suboptimal combination algorithms (BPSO & BFO), which uses binary phase factors, for different number of active users and for different modulation techniques.

Keywords

MC-CDMA, PAPR, Partial Transmit Sequence, Complementary Cumulative Distribution Function (CCDF).

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Neha Arora ¹, D. P. Chechi ¹, Pankaj Batra ²

Affiliations
1 Department of ECE, HCTM, Kaithal, IN
2 Department of ECE, P.I.E.T., Panipat, IN

Abstract

Reducing interference in a cellular system is the most effective approach to increase radio capacity and transmission data rate in the wireless environment. Therefore reducing interference is a difficult and important challenge in wireless communications. Large area synchronous code-division multiple access (LAS-CDMA) is a proposed fourth generation cellular standard. Similar to cdma2000, the distinguishing feature of LAS-CDMA is the new set of spreading codes used to separate users in the wireless channel.

Keywords

LA Code, LS Code, IFW, Auto-Correlation, Cross-Correlation.

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