Channel-aware ALOHA with SINR Capture: When Is the Knowledge of Channel Not Helpful?

被引：0

作者：

Hsu, Fu-Te ^{[1
]}

Su, Hsuan-Jung ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Grad Inst Commun Engn, Taipei 10764, Taiwan

来源：

2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2011年

关键词：

SLOTTED-ALOHA; ACCESS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We consider an ALOHA network in which users have the knowledge of their own channel state information (CSI). In each time slot, each user transmits its packet to the base station (BS) according to a CSI-dependent transmission scheme. A packet is successfully received if its signal to interference plus noise ratio (SINR) is larger than the capture ratio. We analyze the throughput of this network under a threshold-based transmission scheme in which a user transmits only when its channel gain is higher than a threshold. It is shown that in some cases the conventional ALOHA transmission scheme without CSI may outperform the threshold-based transmission scheme in terms of the maximum possible throughput. We give the condition for this phenomenon and find that this phenomenon will not occur if the BS is capable of receiving three or more packets simultaneously. Besides, we present a transmission scheme in which a user only transmits when its channel gain lies in an interval. This scheme includes the threshold-based one as a special case.

引用

页码：844 / 848

页数：5

共 10 条

[1]

Adireddy S., 2002, P C INF SCI SYST MAR, P1

[2]

[Anonymous], 1971, Introduction to probability theory

[3] Random Access Game in Fading Channels With Capture: Equilibria and Braess-like Paradoxes [J].

Hsu, Fu-Te ;

Su, Hsuan-Jung .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2011, 59 (03) :1158-1169

[4]

Knopp R., 1995, P IEEE INT C COMM

[5] A framework for opportunistic scheduling in wireless networks [J].

Liu, X ;

Chong, EKP ;

Shroff, NB .

COMPUTER NETWORKS, 2003, 41 (04) :451-474

[6]

Qin X., 2003, P IEEE INT C COMP CO

[7]

Qin X., 2001, P ANN ALL C COMM CON

[8] Performance analysis of a slotted-ALOHA protocol on a capture channel with fading [J].

Sant, J ;

Sharma, V .

QUEUEING SYSTEMS, 2000, 34 (1-4) :1-35

[9]

Yu YQ, 2006, IEEE T WIREL COMMUN, V5, P1445, DOI 10.1109/TWC.2006.04312

[10] Mobile radio slotted ALOHA with capture and diversity [J].

Zorzi, Michele .

WIRELESS NETWORKS, 1995, 1 (02) :227-239

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