A study on performance enhancement of cyclic delay diversity OFDM system using frequency diversity
نویسندگان
چکیده
منابع مشابه
On space-frequency coding using cyclic delay diversity for OFDM-based transmission systems
Due to its advantages with respect to allowing simple receivers and flexibility, OFDM is – in addition to already existing systems such as DVB-T or HIPERLAN/2 – presently under consideration as auspicious candidate for future wireless communication air interface. However, despite many advantages, the lack of inherent diversity of pure OFDM based transmission schemes represents a major drawback....
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Cyclic delay diversity (CDD) is a simple technique to intentionally increase frequency selectivity of channels for orthogonal frequency division multiplexing (OFDM).This paper proposes a residual carrier frequency offset (RFO) estimation scheme for OFDMbased broadcasting system using CDD. In order to improve the RFO estimation, this paper addresses a decision scheme of the amount of cyclic dela...
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This paper proposes cooperative coding using cyclic delay diversity (CDD) for OFDM systems. The cooperative diversity is combined with channel coding while CDD is applied to the cooperative transmission of the multiple relays to improve the beneficial effects of the cooperating relays. Analyses of frame error probability (FEP) and the average channel power of the proposed scheme are shown. Simu...
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Orthogonal Frequency Division Multiplexing is a key contender for broadcasting standards, due to its immunity towards multipath fading and ease of implementation. Here a novel scheme to exploit the frequency diversity within OFDM subcarriers has been proposed which further increases the bit error rate performance. The diversity is achieved by circularly shifting the OFDM subcarrier coefficients...
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ژورنال
عنوان ژورنال: The Journal of Korean Institute of Communications and Information Sciences
سال: 2012
ISSN: 1226-4717
DOI: 10.7840/kics.2012.37a.3.135