An Efficient Receiver Structure for Faster-than-Nyquist Signal in MIMO System

Baek, Chang-Uk; Park, Gun-Woong; Jung, Ji-Won

doi:10.12720/jcm.12.5.285-290

Cited by 9 publications

(2 citation statements)

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“…The multiple input/multiple output-FTN (MIMO-FTN) [8][9][10] transmission method, which combines the MIMO and FTN methods to improve throughput, can maximize the improvement of the throughput, although its method of decoding and removing interference is difficult, the research about which is still underdeveloped.…”

Section: Introductionmentioning

confidence: 99%

“…In [8], space-time trellis coding and the weighted-zero forcing algorithm were applied to distinguish the symbols of each transmit antenna, and the Bahl, Cocke, Jelinek, and Raviv (BCJR) algorithm [11,12] was used to cancel the interference in order to improve the error performance by increasing the number of iterations. However, it did not improve the performance compared to the single input/single output-FTN (SISO-FTN) method.…”

Section: Introductionmentioning

confidence: 99%

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Faster-than-Nyquist Signal Processing Based on Unequal Error Probability for High-Throughput Wireless Communications

Baek

Jung

2019

Applied Sciences

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Faster-than-Nyquist (FTN) signal processing, which transmits signals faster than the Nyquist rate, is a representative method for improving throughput efficiency sacrificed performance degradation due to inter-symbol interference. To overcome this problem, this paper proposed FTN signal processing based on the unequal error probability to improve performance. The unequal error probability method divides encoded bits into groups according to priority, and FTN interference rates are differently applied to each group. A lower FTN interference ratio is allocated to the group to which high-priority encoded bits belong and a higher FTN interference ratio is allocated to the group to which low-priority encoded bits belong, thus performance improvement can be obtained compared to the conventional FTN method, with the same interference ratio. In addition, we applied the proposed FTN signal processing, based on the unequal error probability method, to the OFDM (orthogonal frequency division multiplexing) system in multipath channel environments. In the simulations, the performance of the proposed method was better than that of the conventional FTN method by about 0.2 dB to 0.3 dB, with an interference ratio of 20%, 30%, and 40%. In addition, in multipath channels, we confirmed that by applying the proposed unequal error probability, the OFDM-FTN method improves performance to a larger extent than the conventional OFDM-FTN method.

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Section: Introductionmentioning

confidence: 99%