Power Allocation in Fixed-Gain and Variable-Gain Full-Duplex Relays with Channel Estimation Error

Document Type : Original Article

Authors

1 Assistant Professor, Faculty of Electrical and Computer Engineering, Semnan University

2 Faculty of Electrical and Computer Engineering, Semnan University,

Abstract

Improving the performance of relay systems using patterns such as power allocation requires access to instantaneous channel coefficients . extraction of this information is always prone to errors and this error increases the undesirable portions of the received signal in the receiver , in addition to disrupting the relay system optimization pattern . the Fixed and variable Gain relays , according to the type of operation , have different effect on the estimation error of channel coefficients . in this paper , with a detailed examination of the effect of the estimation error of channel coefficients according to the pattern of estimation , suitable power allocation is proposed to reduce the effects of undesirable segments in the Fixed and variable Gain operation. Reference papers in this matter for power allocation always use second - order statistical data but in this paper , the estimated coefficients will be used . due to the complexity of the performance of the variable gain relay in control of the interference channel effect in two-way relay , the closed form for power allocation is presented.

Keywords

References

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Advanced Signal Processing
Volume 4, Issue 2 - Serial Number 6
December 2020
Pages 239-249

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