A Low Complexity Interference Suppression Scheme for High Mobility STBC-OFDM Systems

Sheu, Chorng-Ren; Liu, Jiawei; Huang, Chin‐Yu; Huang, Chia-Chi

doi:10.1109/vetecs.2012.6240121

Cited by 6 publications

(1 citation statement)

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“…Therefore, it is necessary to keep the duration of the CP as short as possible and to effectively mitigate the IBI and ICI caused by the insufficient CP with some signal processing algorithms [8][9][10]. To solve the above problems, there are two typical categories of processing approaches: time-domain filtering [11][12][13][14][15][16] and iterative approaches [17][18][19][20][21][22][23]. The time-domain filtering is often called impulse response shortening.…”

Section: Introductionmentioning

confidence: 99%

Pre-processing filter design at transmitters for IBI mitigation in an OFDM system

Wang

2013

J. of Syst. Eng. Electron.

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In order to meet the demands for high transmission rates and high service quality in broadband wireless communication systems, orthogonal frequency division multiplexing (OFDM) has been adopted in some standards. However, the inter-block interference (IBI) and inter-carrier interference (ICI) in an OFDM system affect the performance. To mitigate IBI and ICI, some pre-processing approaches have been proposed based on full channel state information (CSI), which improved the system performance. A pre-processing filter based on partial CSI at the transmitter is designed and investigated. The filter coefficient is given by the optimization processing, the symbol error rate (SER) is tested, and the computation complexity of the proposed scheme is analyzed. Computer simulation results show that the proposed pre-processing filter can effectively mitigate IBI and ICI and the performance can be improved. Compared with pre-processing approaches at the transmitter based on full CSI, the proposed scheme has high spectral efficiency, limited CSI feedback and low computation complexity.

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