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
Kertas kerja ini menangani soalan klasik tentang sama ada kawalan kuasa penghantaran (TPC) boleh meningkatkan kecekapan spektrum sistem TDMA dan sistem selular FDMA seperti dalam kes sistem selular DS-CDMA. Dua jenis skim TPC dipertimbangkan; satu ialah TPC perlahan yang mengawal kehilangan laluan bergantung jarak dan kehilangan bayangan, manakala satu lagi ialah TPC pantas yang mengawal pudar berbilang laluan serta kehilangan laluan dan kehilangan bayangan. Sebagai tambahan kepada TPC, penerimaan kepelbagaian antena dipertimbangkan. Faktor kenaikan gangguan yang dibenarkan χ, yang ditakrifkan sebagai gangguan campur nisbah kuasa hingar ke latar belakang, diperkenalkan. Ungkapan mudah untuk isyarat-kepada-gangguan ditambah nisbah kuasa hingar latar belakang (SINR) pada output penggabung kepelbagaian menggunakan gabungan nisbah-maksimum (MRC) diperoleh untuk mendapatkan jarak guna semula oleh simulasi komputer. Kesan penggunaan bersama TPC dan penerimaan kepelbagaian antena ke atas kecekapan spektrum dibincangkan. Didapati bahawa penggunaan bersama TPC pantas dan kepelbagaian antena adalah berfaedah dan kecekapan spektrum yang lebih besar boleh dicapai berbanding tanpa TPC. Sebaliknya, penggunaan TPC perlahan didapati berfaedah hanya untuk nilai kecil sisihan piawai kehilangan bayang; bagaimanapun, peningkatan dalam kecekapan spektrum agak kecil.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Salinan
Fumiyuki ADACHI, Akihito KATOH, Deepshikha GARG, "Joint Effect of Transmit Power Control and Antenna Diversity on Spectrum Efficiency of a Cellular System" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 5, pp. 919-928, May 2002, doi: .
Abstract: This paper addresses a classic question about whether transmit power control (TPC) can increase the spectrum efficiency of a TDMA system and an FDMA cellular system as in the case of a DS-CDMA cellular system. Two types of TPC schemes are considered; one is slow TPC that regulates the distance dependent path loss and shadowing loss, while the other is fast TPC that regulates multipath fading as well as path loss and shadowing loss. In addition to TPC, antenna diversity reception is considered. The allowable interference rise factor χ, which is defined as the interference plus background noise-to-background noise power ratio, is introduced. The simple expressions for the signal-to-interference plus background noise power ratio (SINR) at the diversity combiner output using maximal-ratio combining (MRC) are derived to obtain the reuse distance by computer simulations. The impact of joint use of TPC and antenna diversity reception on the spectrum efficiency is discussed. It is found that the joint use of fast TPC and antenna diversity is advantageous and larger spectrum efficiency can be achieved than with no TPC. On the other hand, the use of slow TPC is found advantageous only for small values of standard deviation of shadowing loss; however, the improvement in the spectrum efficiency is quite small.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_5_919/_p
Salinan
@ARTICLE{e85-b_5_919,
author={Fumiyuki ADACHI, Akihito KATOH, Deepshikha GARG, },
journal={IEICE TRANSACTIONS on Communications},
title={Joint Effect of Transmit Power Control and Antenna Diversity on Spectrum Efficiency of a Cellular System},
year={2002},
volume={E85-B},
number={5},
pages={919-928},
abstract={This paper addresses a classic question about whether transmit power control (TPC) can increase the spectrum efficiency of a TDMA system and an FDMA cellular system as in the case of a DS-CDMA cellular system. Two types of TPC schemes are considered; one is slow TPC that regulates the distance dependent path loss and shadowing loss, while the other is fast TPC that regulates multipath fading as well as path loss and shadowing loss. In addition to TPC, antenna diversity reception is considered. The allowable interference rise factor χ, which is defined as the interference plus background noise-to-background noise power ratio, is introduced. The simple expressions for the signal-to-interference plus background noise power ratio (SINR) at the diversity combiner output using maximal-ratio combining (MRC) are derived to obtain the reuse distance by computer simulations. The impact of joint use of TPC and antenna diversity reception on the spectrum efficiency is discussed. It is found that the joint use of fast TPC and antenna diversity is advantageous and larger spectrum efficiency can be achieved than with no TPC. On the other hand, the use of slow TPC is found advantageous only for small values of standard deviation of shadowing loss; however, the improvement in the spectrum efficiency is quite small.},
keywords={},
doi={},
ISSN={},
month={May},}
Salinan
TY - JOUR
TI - Joint Effect of Transmit Power Control and Antenna Diversity on Spectrum Efficiency of a Cellular System
T2 - IEICE TRANSACTIONS on Communications
SP - 919
EP - 928
AU - Fumiyuki ADACHI
AU - Akihito KATOH
AU - Deepshikha GARG
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2002
AB - This paper addresses a classic question about whether transmit power control (TPC) can increase the spectrum efficiency of a TDMA system and an FDMA cellular system as in the case of a DS-CDMA cellular system. Two types of TPC schemes are considered; one is slow TPC that regulates the distance dependent path loss and shadowing loss, while the other is fast TPC that regulates multipath fading as well as path loss and shadowing loss. In addition to TPC, antenna diversity reception is considered. The allowable interference rise factor χ, which is defined as the interference plus background noise-to-background noise power ratio, is introduced. The simple expressions for the signal-to-interference plus background noise power ratio (SINR) at the diversity combiner output using maximal-ratio combining (MRC) are derived to obtain the reuse distance by computer simulations. The impact of joint use of TPC and antenna diversity reception on the spectrum efficiency is discussed. It is found that the joint use of fast TPC and antenna diversity is advantageous and larger spectrum efficiency can be achieved than with no TPC. On the other hand, the use of slow TPC is found advantageous only for small values of standard deviation of shadowing loss; however, the improvement in the spectrum efficiency is quite small.
ER -