Iterative frequency-domain fractionally spaced receiver for zero-padded multi-carrier code division multiple access systems

Yan, Yanxin1; Gong, Yi2; Ma, Maode1; Shi, Qinghua3

2014-11-27

10.1049/iet-com.2014.0233

IET Communications   影响因子和分区

1751-8628

1751-8636

In this study, the authors propose an improved frequency-domain fractionally spaced (FDFS) minimum mean square error (MMSE) receiver for zero-padded multi-carrier code division multiple access (MC-CDMA) systems when the guard interval is not enough to avoid the inter-symbol interference (ISI) caused by the multipath channel. The proposed novel iterative FDFS-based receivers firstly reconstruct the received symbol to reduce the ISI and then followed by the FDFS-based equalisers to minimise the effect of ISI and inter-carrier interference (ICI) caused by carrier frequency offset (CFO) and Doppler shifts. A few iterations are performed to achieve the expected bit error rate (BER) performance. To reduce the receiver complexity, the novel simplified diagonal FDFS-based receivers with a fixed noise variance are developed with slight performance degradation. The proposed iterative receivers have never been studied in the existing literature. Simulation results show that the proposed iterative FDFS-based receivers can significantly improve the BER performance of the conventional FDFS-MMSE receiver in severe multiple interferences environments caused by multipath, CFO and Doppler shift.

code division multiple access radio receivers least mean squares methods multipath channels intersymbol interference interference suppression equalisers error statistics intercarrier interference Doppler shift Iterative frequency-domain fractionally spaced receiver zero-padded multicarrier code division multiple access system minimum mean square error receiver MMSE receiver MC-CDMA system intersymbol interference reduction multipath channel ISI reduction FDFS based equaliser ICI carrier frequency offset CFO bit error rate performance BER performance receiver complexity reduction

SCI ; EI

英语

其他

Engineering

Engineering, Electrical & Electronic

WOS:000345304300004

INST ENGINEERING TECHNOLOGY-IET

20151700785482

Bit error rate ; Doppler effect ; Frequency allocation ; Frequency domain analysis ; Intersymbol interference ; Mean square error ; Multicarrier modulation ; Multiple access interference ; Turbo codes

Radio Systems and Equipment:716.3 ; Data Communication, Equipment and Techniques:722.3 ; Computer Programming:723.1 ; Mathematical Transformations:921.3 ; Mathematical Statistics:922.2

Web of Science

1.Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
2.South Univ Sci & Technol China, Shenzhen, Peoples R China
3.Univ Electrocommun, Dept Elect Engn, Tokyo, Japan

Yan, Yanxin,Gong, Yi,Ma, Maode,et al. Iterative frequency-domain fractionally spaced receiver for zero-padded multi-carrier code division multiple access systems[J]. IET Communications,2014,8(17):2993-3000.

Yan, Yanxin,Gong, Yi,Ma, Maode,&Shi, Qinghua.(2014).Iterative frequency-domain fractionally spaced receiver for zero-padded multi-carrier code division multiple access systems.IET Communications,8(17),2993-3000.

Yan, Yanxin,et al."Iterative frequency-domain fractionally spaced receiver for zero-padded multi-carrier code division multiple access systems".IET Communications 8.17(2014):2993-3000.