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
최근 3GPP LTE-Advanced가 많은 주목을 받고 있는데, 채널 대역폭이 LTE의 최대 대역폭인 20MHz를 넘어선다. LTE에서는 SC-FDMA(Single Carrier-Frequency Division Multiple Access)가 매우 낮은 입방 메트릭(CM)이라는 장점으로 인해 업링크 액세스 방식으로 채택되었습니다. LTE-A 광대역 전송의 경우 다중 사용자 다양성을 활용하기 위해 단일 캐리어 액세스보다 다중 캐리어 액세스가 더 효과적이며 제어 정보가 각 20MHz의 가장자리에서 전송되는 LTE의 물리적 채널 구조를 유지할 수 있습니다. 본 논문에서는 20MHz 이하 대역폭과 20MHz 이상 대역폭에서의 액세스 방식에 대해 논의합니다. 20MHz 이하의 대역폭의 경우 셀-에지 사용자 처리량을 유지하면서 평균 처리량을 향상시키기 위해 불연속적인 자원 할당을 허용하는 액세스 방식, 즉 SDC(스펙트럼 분할 제어) 및 SC의 적응적 선택을 갖춘 DFT-spread-OFDM을 제안합니다. -FDMA 및 OFDM(SC+OFDM). 불연속 스펙트럼의 수는 스펙트럼 분할(SD)로 표시됩니다. DFT-S-OFDM의 경우 매개변수 최대 SD를 SD의 상한으로 정의합니다. 우리는 20MHz 미만의 대역폭에서 제안된 방식을 평가하고 공통 최대 SD 또는 UE별 최대 SD를 갖는 SDC뿐만 아니라 SC+OFDM이 평균 처리량을 향상시킬 수 있는 반면 셀 에지 사용자 처리량은 SC-FDMA에 접근할 수 있음을 확인했습니다. 20MHz를 초과하는 대역폭의 경우 여러 20MHz 폭 대역을 통합하기 위한 실행 가능한 액세스 방식을 결정하기 위해 핵심 요소를 고려합니다.
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Le LIU, Takamichi INOUE, Kenji KOYANAGI, Yoshikazu KAKURA, "Uplink Access Schemes for LTE-Advanced" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 5, pp. 1760-1768, May 2009, doi: 10.1587/transcom.E92.B.1760.
Abstract: The 3GPP LTE-Advanced has been attracting much attention recently, where the channel bandwidth would be beyond the maximum bandwidth of LTE, 20 MHz. In LTE, single carrier-frequency division multiple access (SC-FDMA) was accepted as the uplink access scheme due to its advantage of very low cubic metric (CM). For LTE-A wideband transmission, multicarrier access would be more effective than single carrier access to make use of multi-user diversity and can maintain the physical channel structure of LTE, where the control information is transmitted on the edges of each 20 MHz. In this paper, we discuss the access schemes in bandwidth under 20 MHz as well as over 20 MHz. In the case of bandwidth under 20 MHz, we propose the access schemes allowing discontinuous resource allocation to enhance average throughput while maintaining cell-edge user throughput, that is, DFT-spread-OFDM with spectrum division control (SDC) and adaptive selection of SC-FDMA and OFDM (SC+OFDM). The number of discontinuous spectrums is denoted as spectrum division (SD). For DFT-S-OFDM, we define a parameter max SD as the upper limit of SD. We evaluate our proposed schemes in bandwidth under 20 MHz and find that SC+OFDM as well as SDC with common max SD or UE-specific max SD can improve average throughput while their cell-edge user throughput can approach that of SC-FDMA. In the case of bandwidth over 20 MHz, we consider key factors to decide a feasible access scheme for aggregating several 20 MHz-wide bands.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.1760/_p
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@ARTICLE{e92-b_5_1760,
author={Le LIU, Takamichi INOUE, Kenji KOYANAGI, Yoshikazu KAKURA, },
journal={IEICE TRANSACTIONS on Communications},
title={Uplink Access Schemes for LTE-Advanced},
year={2009},
volume={E92-B},
number={5},
pages={1760-1768},
abstract={The 3GPP LTE-Advanced has been attracting much attention recently, where the channel bandwidth would be beyond the maximum bandwidth of LTE, 20 MHz. In LTE, single carrier-frequency division multiple access (SC-FDMA) was accepted as the uplink access scheme due to its advantage of very low cubic metric (CM). For LTE-A wideband transmission, multicarrier access would be more effective than single carrier access to make use of multi-user diversity and can maintain the physical channel structure of LTE, where the control information is transmitted on the edges of each 20 MHz. In this paper, we discuss the access schemes in bandwidth under 20 MHz as well as over 20 MHz. In the case of bandwidth under 20 MHz, we propose the access schemes allowing discontinuous resource allocation to enhance average throughput while maintaining cell-edge user throughput, that is, DFT-spread-OFDM with spectrum division control (SDC) and adaptive selection of SC-FDMA and OFDM (SC+OFDM). The number of discontinuous spectrums is denoted as spectrum division (SD). For DFT-S-OFDM, we define a parameter max SD as the upper limit of SD. We evaluate our proposed schemes in bandwidth under 20 MHz and find that SC+OFDM as well as SDC with common max SD or UE-specific max SD can improve average throughput while their cell-edge user throughput can approach that of SC-FDMA. In the case of bandwidth over 20 MHz, we consider key factors to decide a feasible access scheme for aggregating several 20 MHz-wide bands.},
keywords={},
doi={10.1587/transcom.E92.B.1760},
ISSN={1745-1345},
month={May},}
부
TY - JOUR
TI - Uplink Access Schemes for LTE-Advanced
T2 - IEICE TRANSACTIONS on Communications
SP - 1760
EP - 1768
AU - Le LIU
AU - Takamichi INOUE
AU - Kenji KOYANAGI
AU - Yoshikazu KAKURA
PY - 2009
DO - 10.1587/transcom.E92.B.1760
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2009
AB - The 3GPP LTE-Advanced has been attracting much attention recently, where the channel bandwidth would be beyond the maximum bandwidth of LTE, 20 MHz. In LTE, single carrier-frequency division multiple access (SC-FDMA) was accepted as the uplink access scheme due to its advantage of very low cubic metric (CM). For LTE-A wideband transmission, multicarrier access would be more effective than single carrier access to make use of multi-user diversity and can maintain the physical channel structure of LTE, where the control information is transmitted on the edges of each 20 MHz. In this paper, we discuss the access schemes in bandwidth under 20 MHz as well as over 20 MHz. In the case of bandwidth under 20 MHz, we propose the access schemes allowing discontinuous resource allocation to enhance average throughput while maintaining cell-edge user throughput, that is, DFT-spread-OFDM with spectrum division control (SDC) and adaptive selection of SC-FDMA and OFDM (SC+OFDM). The number of discontinuous spectrums is denoted as spectrum division (SD). For DFT-S-OFDM, we define a parameter max SD as the upper limit of SD. We evaluate our proposed schemes in bandwidth under 20 MHz and find that SC+OFDM as well as SDC with common max SD or UE-specific max SD can improve average throughput while their cell-edge user throughput can approach that of SC-FDMA. In the case of bandwidth over 20 MHz, we consider key factors to decide a feasible access scheme for aggregating several 20 MHz-wide bands.
ER -