Sökning: "Shi lei"

Hittade 3 avhandlingar innehållade orden Shi lei.

1. 1. Econometric analyses of renewable energy promotion

   Författare :Lei Shi; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : This thesis consists of four self-contained papers related to renewable energy promotion. Paper I analyzes the factors that influence the share of renewable energy in total energy supply. The analysis is conducted using a panel data consisting of 26 OECD countries over the period 1990-2010. LÄS MER

3. 2. Availability Assessment for Secondary Access in TV White Space

   Författare :Lei Shi; Jens Zander; Ki Won Sung; Tim Irnich; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : In recent years, the rapid growth in wireless data traffic has posed not only unique opportunities but also great challenges for the wireless industry. In order to meet the growing demand without excessive cost or energy consumption, one feasible option for the operators is to acquire more spectrum for wireless communication. LÄS MER

4. 3. Efficient Spectrum Utilization of Uhf Broadcast Band

   Författare :Lei Shi; Jens Zander; Ki Won Sung; Linda Dolye; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TV White Space; CellTV; UHF Band; Spectrum; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The UHF band between 470-790 MHz, currently occupied by digital ter- restrial TV (DTT) distribution in Europe, is widely regarded as a premium spectrum band for providing mobile coverage. With the exponential increase in wireless data traffic in recent years, there has been growing interests in gaining access to this spectrum band for wireless broadband services. LÄS MER