ENERGY EFFICIENCY IN COMMUNICATIONS AND NETWORKS pdf

... consumes minimal power and avoids inaccuracies due to gain errors and offsets. In (Jimenez-Irastorza et al. 2011) an interesting Time-to-Digital converter (TDC) achieving high energy efficiency ... putting the same constellation on symmetrical subcarrier pairs, and combining the pair coherently at the receiver, the phase shifts caused by SFO on Energy Efficiency in Com...

Ngày tải lên: 27/06/2014, 00:20

... diversity order d ∗ = min{NL, ML}. 217 Near-Optimal Nonlinear Forwarding Strategy for Two-Hop MIMO Relaying Recent Advances in Wireless Communications and Networks 210 Engineering and Technology ... group is developing standards to enable handover and interoperability between heterogeneous network types, including both 802 and non 802 networks. The standard provides qui...

Ngày tải lên: 19/06/2014, 19:20

... less intentionally. The concept of creating, coding, storing, distributing, exchanging, integrating, and using knowledge in organizations is not new, but management practice is becoming increasingly ... organization has to qualify by giving and receiving gifts. Exchanging gifts means initiating and maintaining interactions. It is not only digital products or services being affected by...

Ngày tải lên: 24/01/2014, 00:20

... cooling these servers, and at the same time, powering off unused switches will result in cooling energy savings. We do not include these extra costs/savings in this paper. 3.1 Traffic Patterns Energy, ... baseline and ElasticTree cases, and only include active (powered-on) switches and links for ElasticTree cases. Since all three switches in Ta- ble 1 have an idle:active ratio...

Ngày tải lên: 23/03/2014, 13:20

... on joint call admission control in integrated wireless local area networks (WLAN) and cellular networks. Chapter 10 is devoted to studying near-optimal nonlinear forwarding strategies in two-hop ... knowledgeable and successful researchers in the world. Each chapter was written in an introductory style beginning with the fundamentals, describing approaches to the hottest i...

Ngày tải lên: 19/06/2014, 19:20

... classified into two categories: continuous and discontinuous as shown in Fig. 10. These two categories can be subdivided into three types: intraband contiguous, intraband discontinuous and interband. ... eliminate intersymbol interference and intercarrier interference. In general, the symbol timing offset may vary in an interval that is equal to the guard time and does not c...

Ngày tải lên: 19/06/2014, 19:20

... complexity and the extent of channel state information required at the receiver, we will introduce four types of combining schemes, including selection combining, switch combining, EGC, and MRC, in ... (Giannakis et al., 2006). In this section, we first present various receive diversity schemes, including selection combining, switch combining, equal-gain combining (EGC), and MRC...

Ngày tải lên: 19/06/2014, 19:20

... α g,c ), (39) 104 Recent Advances in Wireless Communications and Networks Recent Advances in Wireless Communications and Networks 88 4.2 Conventional beamforming A conventional beamforming scheme is to ... Advances in Wireless Communications and Networks 86 4.1 Linear array and signal model Fig. 16 depicts a linear array with L omni-directional and equi-...

Ngày tải lên: 19/06/2014, 19:20

... in Wireless Communications and Networks Optimal Resource Allocation in OFDMA Broadcast Channels Using Dynamic Programming 13 Fig. 11. Achievable points for u =[1, 2], and their convex hull. In ... corresponding users’ rate vector are obtained from (8) and shown in Fig. 6 as a marker point in the boundary of the rate region. Therefore, the marker points are the points of R...

Ngày tải lên: 19/06/2014, 19:20