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Ȩ Ȩ > ¿¬±¸¹®Çå > Çмú´ëȸ ÇÁ·Î½Ãµù > Çѱ¹Á¤º¸Åë½ÅÇÐȸ Çмú´ëȸ > 2018³â Ãß°èÇмú´ëȸ

2018³â Ãß°èÇмú´ëȸ

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¼¿·ê·¯ ³×Æ®¿öÅ©¿¡¼­ ¼Û½ÅÆÄ¿ö°¡ ÃÖÀûÀÇ Çǵå¹é Á¤º¸·®¿¡ ¹ÌÄ¡´Â ¿µÇâ¿¡ °üÇÑ ¿¬±¸
¿µ¹®Á¦¸ñ(English Title) Effect of transmit power on the optimal number of feedback bits in dense cellular networks
ÀúÀÚ(Author) ¹Î¹®½Ä   ³ªÃ¶ÈÆ   Moonsik Min   Cheol-Hun Na  
¿ø¹®¼ö·Ïó(Citation) VOL 22 NO. 02 PP. 0464 ~ 0466 (2018. 10)
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(Korean Abstract)
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(English Abstract)
In this paper, a dense cellular network is considered in which each base station equipped with multiple antennas simultaneously communicates with multiple single-antenna users. Based on limited feedback, each user feeds back its quantized channel state information (CSI) to its associated transmitter, and the transmitter broadcasts multiple data streams prepared for the scheduled users using a space-division multiple access scheme. As the amount of CSI is limited at the transmitter, the downlink throughput increases with the number feedback bits. However, the increased number of feedback bits requires the correspondingly increased amount of uplink resources. Thus, an appropriate balance between the downlink throughput and the uplink resource usage should be considered in realistic systems. A net spectral efficiency defined in this context is used in this paper, and the optimal number of feedback bits that maximizes the net spectral efficiency is analyzed. This paper particularly focuses on the case when the received signal power is much smaller than the noise power.
Å°¿öµå(Keyword) Multiple-input multiple-output (MIMO)   Cellular network   Inter-cell interference   Limited feedback   Spectral efficiency  
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