The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
본 논문에서는 LMMSE(선형 최소 평균 제곱 오류) 채널 추정 및 MRC(최대 비율 결합) 감지를 사용하여 SP(중첩 파일럿)가 있는 양자화된 대규모 MIMO(다중 입력 다중 출력) 시스템의 성능을 연구합니다. 이전 연구와 달리 임의 비트 아날로그-디지털 변환기(ADC)가 고려됩니다. 우리는 추정된 파일럿 제거를 고려하여 달성 가능한 업링크 속도의 정확한 근사치를 도출합니다. 분석적 식을 바탕으로 달성 가능한 속도를 최대화하는 최적의 파일럿 역률을 도출하고 에너지 효율(EE)에 대한 식을 제시합니다. 또한, 일부 점근적 한계 하에서 달성 가능한 속도와 최적의 전력 할당 정책이 분석됩니다. 분석에 따르면 고해상도 ADC 또는 더 많은 수의 기지국(BS) 안테나를 갖춘 시스템은 파일럿에 더 많은 전력을 할당해야 합니다. 이와 대조적으로 채널이 천천히 변할 때는 데이터에 더 많은 전력을 할당해야 합니다. 수치 결과에 따르면 낮은 신호 대 잡음비(SNR) 영역에서 1비트 양자화기의 경우 대부분의 경우 SP가 시간 다중화된 파일럿(TP)보다 성능이 뛰어난 반면, 고해상도 ADC가 있는 시스템의 경우 SP 방식은 다음과 같습니다. 비교적 적은 수의 BS 안테나와 상대적으로 긴 채널 일관성 시간을 갖는 시나리오에 적합합니다.
Chen CHEN
Jiangsu University,Jiangsu Key Laboratory of Security Technology for Industrial Cyberspace
Wence ZHANG
Jiangsu University,Jiangsu Key Laboratory of Security Technology for Industrial Cyberspace
Xu BAO
Jiangsu University,Jiangsu Key Laboratory of Security Technology for Industrial Cyberspace
Jing XIA
Jiangsu University,Jiangsu Key Laboratory of Security Technology for Industrial Cyberspace
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부
Chen CHEN, Wence ZHANG, Xu BAO, Jing XIA, "Performance Analysis on the Uplink of Massive MIMO Systems with Superimposed Pilots and Arbitrary-Bit ADCs" in IEICE TRANSACTIONS on Communications,
vol. E105-B, no. 5, pp. 629-637, May 2022, doi: 10.1587/transcom.2021EBP3085.
Abstract: This paper studies the performance of quantized massive multiple-input multiple-output (MIMO) systems with superimposed pilots (SP), using linear minimum mean-square-error (LMMSE) channel estimation and maximum ratio combining (MRC) detection. In contrast to previous works, arbitrary-bit analog-to-digital converters (ADCs) are considered. We derive an accurate approximation of the uplink achievable rate considering the removal of estimated pilots. Based on the analytical expression, the optimal pilot power factor that maximizes the achievable rate is deduced and an expression for energy efficiency (EE) is given. In addition, the achievable rate and the optimal power allocation policy under some asymptotic limits are analyzed. Analysis shows that the systems with higher-resolution ADCs or larger number of base station (BS) antennas need to allocate more power to pilots. In contrast, more power needs to be allocated to data when the channel is slowly varying. Numerical results show that in the low signal-to-noise ratio (SNR) region, for 1-bit quantizers, SP outperforms time-multiplexed pilots (TP) in most cases, while for systems with higher-resolution ADCs, the SP scheme is suitable for the scenarios with comparatively small number of BS antennas and relatively long channel coherence time.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2021EBP3085/_p
부
@ARTICLE{e105-b_5_629,
author={Chen CHEN, Wence ZHANG, Xu BAO, Jing XIA, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Analysis on the Uplink of Massive MIMO Systems with Superimposed Pilots and Arbitrary-Bit ADCs},
year={2022},
volume={E105-B},
number={5},
pages={629-637},
abstract={This paper studies the performance of quantized massive multiple-input multiple-output (MIMO) systems with superimposed pilots (SP), using linear minimum mean-square-error (LMMSE) channel estimation and maximum ratio combining (MRC) detection. In contrast to previous works, arbitrary-bit analog-to-digital converters (ADCs) are considered. We derive an accurate approximation of the uplink achievable rate considering the removal of estimated pilots. Based on the analytical expression, the optimal pilot power factor that maximizes the achievable rate is deduced and an expression for energy efficiency (EE) is given. In addition, the achievable rate and the optimal power allocation policy under some asymptotic limits are analyzed. Analysis shows that the systems with higher-resolution ADCs or larger number of base station (BS) antennas need to allocate more power to pilots. In contrast, more power needs to be allocated to data when the channel is slowly varying. Numerical results show that in the low signal-to-noise ratio (SNR) region, for 1-bit quantizers, SP outperforms time-multiplexed pilots (TP) in most cases, while for systems with higher-resolution ADCs, the SP scheme is suitable for the scenarios with comparatively small number of BS antennas and relatively long channel coherence time.},
keywords={},
doi={10.1587/transcom.2021EBP3085},
ISSN={1745-1345},
month={May},}
부
TY - JOUR
TI - Performance Analysis on the Uplink of Massive MIMO Systems with Superimposed Pilots and Arbitrary-Bit ADCs
T2 - IEICE TRANSACTIONS on Communications
SP - 629
EP - 637
AU - Chen CHEN
AU - Wence ZHANG
AU - Xu BAO
AU - Jing XIA
PY - 2022
DO - 10.1587/transcom.2021EBP3085
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E105-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2022
AB - This paper studies the performance of quantized massive multiple-input multiple-output (MIMO) systems with superimposed pilots (SP), using linear minimum mean-square-error (LMMSE) channel estimation and maximum ratio combining (MRC) detection. In contrast to previous works, arbitrary-bit analog-to-digital converters (ADCs) are considered. We derive an accurate approximation of the uplink achievable rate considering the removal of estimated pilots. Based on the analytical expression, the optimal pilot power factor that maximizes the achievable rate is deduced and an expression for energy efficiency (EE) is given. In addition, the achievable rate and the optimal power allocation policy under some asymptotic limits are analyzed. Analysis shows that the systems with higher-resolution ADCs or larger number of base station (BS) antennas need to allocate more power to pilots. In contrast, more power needs to be allocated to data when the channel is slowly varying. Numerical results show that in the low signal-to-noise ratio (SNR) region, for 1-bit quantizers, SP outperforms time-multiplexed pilots (TP) in most cases, while for systems with higher-resolution ADCs, the SP scheme is suitable for the scenarios with comparatively small number of BS antennas and relatively long channel coherence time.
ER -