lte for 4g mobile broadband air interface technologies and performance

... key features and technologies of the W-CDMA FDD air interface, and a description of the physical channel and frame structure. ETSI Wideband CDMA Standard for the UTRA FDD Air Interface ... W-CDMA ETSI Wideband CDMA Standard for the UTRA FDD Air Interface 5 2.2 Performance Capabilities Some of the technical benefits of W-CDMA which greatly enhance its...

Ngày tải lên: 04/08/2012, 14:24

... a 4G standard. This book presents multicarrier techniques, including OFDM, and we believe that readers can easily understand the reason why it is suited for 4G 8 Multicarrier Techniques for 4G ... Prasad Radio over Fiber Technologies for Mobile Communications Networks, Hamed Al-Raweshidy and Shozo Komaki, editors Simulation and Software Radio for Mobile Communication...

Ngày tải lên: 26/04/2013, 09:50

... a 4G standard. This book presents multicarrier techniques, including OFDM, and we believe that readers can easily understand the reason why it is suited for 4G 8 Multicarrier Techniques for 4G ... will use already-allocated and identified frequency bands and potential new frequency bands for the new elements. Therefore, no direct interference between different technologies...

Ngày tải lên: 20/01/2014, 23:20

... 31 Principle and History of MCM/OFDM Figure 3.2 Comparison of transmitted waveforms: (a) Baseband serial data transmission system; and (b) OFDM system. 22 Multicarrier Techniques for 4G Mobile Communications 2.7 ... symbol rate, and by using these substreams to modulate several subcarriers. 27 28 Multicarrier Techniques for 4G Mobile Communications Figure 3.1 compares a sing...

Ngày tải lên: 20/01/2014, 23:20

... and ω the rotational speed. Suter parameters give information for both the turbine and the pump mode for few available pumps, and the Derakhshan model predicts information for the turbine performance ... of Suter parameters [6] and Derakhshan [5] with one experimental performance curve for a real PAT operating as a pump and turbine mode. The variation of head, power...

Ngày tải lên: 05/09/2013, 14:58

... wide band, and mobile broadband, on the other hand, pushes these services to mobile devices. We are seeing that mobile broadband technologies are reaching a commonal- ity in the air interface and ... motivation toward mobile WiMAX and 4G. Finally, we conclude the chapter with a discussion of key features and market of mobile broadband. 1.2 Before 3G and Broadb...

Ngày tải lên: 03/04/2014, 12:23

... systems. The standards specify air interfaces based upon both wideband CDMA (W-CDMA) and wideband TDMA. How- ever, since W-CDMA is the preferred interface, we have chosen to deal with W-CDMA and more ... MHz band. Thus, a total bandwidth of 50 MHz was now available for cellular systems. The spectrum allocation is shown in Figure 1-4. The B bands con- sisting of subbands B and B¿ we...

Ngày tải lên: 02/03/2013, 16:58

... engine performance. Air- fuel ratio and specific fuel consumption are determined. The results indicate the effectiveness of the first manifold. Copyright © 2012 International Energy and Environment ... National School of Engineers of Sfax (ENIS), ANME and SAGAZ. Authors would like to acknowledge them for their efforts and helpful technical and financial assistance. Refere...

Ngày tải lên: 05/09/2013, 16:30

... important for the quality and success of a new mobile standard. For some mobile systems, only the Air- interface was specified in the beginning, like IS-95, the standard for CDMA. Although different for ... message. 7 The Air- Interface of GSM The Air- interface is the central interface of every mobile system and typically the only one to which a customer is expos...

Ngày tải lên: 19/10/2013, 03:20