NDLI: Inter-carrier interference self-cancellation for CI/MC-CDMA system

Content Provider	IEEE Xplore Digital Library
Author	Xue Li Ruolin Zhou Jian Zhang Chakravarthy, V. Zhiqiang Wu
Copyright Year	2012
Description	Author affiliation: Air Force Res. Lab., Wright-Patterson AFB, OH, USA (Chakravarthy, V.) \|\| Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA (Xue Li; Ruolin Zhou; Zhiqiang Wu) \|\| Dept. of Math. & Comput. Sci., Texas Woman's Univ., Denton, TX, USA (Jian Zhang)
Abstract	Multi-carrier code division multiple access (MC-CDMA) has been considered as a strong candidate for next generation wireless communication system due to its excellent performance in multi-path fading channel and simple receiver structure. Carrier Interferometry code for MC-CDMA (CI/MC-CDMA) provides better BER performance, less peak to average power ratio (PAPR) and higher design flexibility than conventional MC-CDMA systems employing Hadarmard-Walsh spreading code. However, like all the multi-carrier transmission technologies such as orthogonal frequency division multiplexing (OFDM), the inter-carrier interference (ICI) produced by the frequency offset between the transmitter and receiver local oscillators or by Doppler frequency shift due to high mobility causes significant bit error rate (BER) performance degradation in CI/MC-CDMA system. In this paper, we apply the ICI self-cancellation scheme previously proposed for OFDM system to orthogonal CI/MC-CDMA system to reduce ICI effect and improve BER performance. Unlike the traditional ICI self-cancellation scheme for OFDM which reduces the ICI at the price of lowing the transmission rate and reducing the bandwidth efficiency, we introduce a second set of orthogonal CI codes to maintain the throughput. Simulations of different leveled modulations over AWGN channel and multi-path fading channel confirmed the effectiveness and efficiency of the proposed self-embedded ICI cancellation scheme for CI/MC-CDMA system where significant BER performance gain has been observed when ICI is present.
Starting Page	037
Ending Page	042
File Size	193615
Page Count	6
File Format	PDF
ISBN	9781509005987
DOI	10.1109/WDD.2012.7311284
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-01-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	AWGN channels Fading Multicarrier code division multiple access OFDM Bit error rate Modulation Receivers
Content Type	Text
Resource Type	Article

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