Báo cáo toán học: " Improving energy efficiency through multimode transmission in the downlink MIMO systems" pptx

... 3GPP-LTE. Therefore, we will focus on the maximizing energy efficiency problem in t he down- link MIMO systems in this article. Previous works mainly focused on maxi mizing energy efficiency in the single-input ... the main pa rts of the energy consumption [1,2], improving the energy efficiency of BS is significant. Additionally, multiple-input multiple- outp...

Ngày tải lên: 20/06/2014, 21:20

... and 3GPP-LTE. Therefore, we will focus on the maximizing energy efficiency problem in the downlink MIMO systems in this article. Previous works mainly focused on maximizing energy efficiency in the single-input ... single-output (SISO) systems [3–7] and point to point single user (SU) MIMO systems [8–10]. In the uplink TDMA SISO channels, the optimal transmission r...

Ngày tải lên: 18/06/2014, 22:20

... and 3GPP-LTE. Therefore, we will focus on the maximizing energy efficiency problem in the downlink MIMO systems in this article. Previous works mainly focused on maximizing energy efficiency in the single-input ... power allocation here helps in the comparison between SU -MIMO 1 Improving energy efficiency through multimode transmission in the downlink M...

Ngày tải lên: 20/06/2014, 04:20

... Conference (GreenCom), Online (2011) 13. J Xu, L Qiu, C Yu, Improving energy efficiency through multimode transmission in the downlink MIMO systems, in EURASIP J Wireless Commun and Networking (2011, in press) 14. ... transmitters in the downlink systems. There are a lot of literatures considering the coopera- tive multi-cell downlink systems from a standpoin...

Ngày tải lên: 20/06/2014, 22:20

... gains The SNR gain comes from the (coherent) addition of the incoming streams at the receiver antennas. It is obtained by averaging the instantaneous SNR over the channel realizations and indicates ... indicates the SNR gain over the single-user (SU) single-input-single-output (SISO) case. We derive the resulting average SNR (Section 3.1) and to compare it to the SNR gain...

Ngày tải lên: 20/06/2014, 22:20

... enhancing the output of an automatic in- dexer through index combination and term en- richment. Ongoing work intends to improve the interaction of indexing and acquisition through self-indexing ... combination is, however, non- deterministic since no priority ordering is defined between these 2 indexes. There- fore, it does not correspond to a condition in Definition 3.1. H...

Ngày tải lên: 31/03/2014, 04:20

... visits in inter- vention zones. One of the most promising aspects of formative supervi- sion is the participation of the community in evaluating and improving service quality. Through their involvement in ... high. The decline in prenatal competence that occurred in Thiès may be explained by a deficiency in the prenatal care sec- tion of the checklist used during...

Ngày tải lên: 18/06/2014, 17:20

... a topological insulator, spin–orbit coupling opens an energy gap in the bulk, and results in helical surface states residing in the bulk gap in the absence of magnetic fields. Such surface states are spin-dependent ... during the tunneling processes, i.e., spin-momentum locking. If the incident electrons are spin polarized along the direction of the vector (π × z), th...

Ngày tải lên: 20/06/2014, 20:20

... one branch. 2. In parsing, search has to be equal to the se- mantic effort. The single branch constraint in production checks whether the definite articles are suffi- ciently distinct from one another. Since ... illustrated in the top of Figure 1. This Fig- ure shows the search tree of a small grammar when parsing the utterance Die Kinder gaben der Lehrerin die Zeichnung ( the...

Ngày tải lên: 22/02/2014, 03:20

... studies, they were interested in co-reference links, hence they did not annotate impersonal pronouns, claiming they are rare. On the other hand, we took all the pro- drop pronouns into account, including ... can specifically address the issue of dropped subject pronouns. We first present the training corpus be- fore describing the approach in more detail. Training corpus To train...

Ngày tải lên: 24/03/2014, 03:20