Báo cáo hóa học: " Review Article Comparison among Cognitive Radio Architectures for Spectrum Sensing" pdf

... Raffetto,C.S.Regazzoni,andC. Armani, “A comparison among cooperative spectrum sensing approaches for cognitive radios,” in Proceedings of the 2nd International Workshop on Cognitive Information Processing (CIP ... Communications and Networking Volume 2011, Article ID 749891, 18 pages doi:10.1155/2011/749891 Review A rticle Comparison among Cognitive Radio Architectures...

Ngày tải lên: 21/06/2014, 05:20

... well- known technique for LP of audio signals, see [12]and references therein. In WLP, the input signal undergoes a nonuniform frequency transformation before a conventional LP is performed, with the ... the SLP estimation algorithms, and for designing a PLP model for polyphonic audio signals. For the conventional LP model, the performance may differ substantially for the autocorrela...

Ngày tải lên: 22/06/2014, 00:20

... processing architecture that allows hierarchical infor mation processing. This is necessary for complex processes. (Additionally, there are approaches for formalizing the hierarchical representations in ... 55, no. 3, pp. 1385–1393, 2008. [7] W. Elmenreich, “A review on system architectures for sensor fusion applications,” in Software Technologies for Embedded and Ubiquitous Syste...

Ngày tải lên: 21/06/2014, 07:20

... Mudumbai, and U. Madhow, “Distributed beamforming for information transfer in sensor networks,” in Proceedings of the 3rd International Symposium on Information Processing in Sensor Networks (IPSN ... in [22]willbeusedfor channel estimation protocol B1 in Section 6 and is therefore shortly revisited in this section. Please refer to [22]fora more detailed description and a comparison to th...

Ngày tải lên: 21/06/2014, 17:20

... plays the role of Pol- icy Enforcement Function (PEF). Consequently, according to the PDF decision, PEF allocates the resources for the session media. In Release 5, the PDF was enclosed in the P-CSCF. ... S-CSCF P-CSCF BGCF I-CSCF MGCF PDF PDF PDF IP transport plane Cable access technology WiFi MGW PSTN/2G SIP Diameter Resource authorisation/reservation CSE: CAMEL service environmen...

Ngày tải lên: 21/06/2014, 22:20

... are performed w ith the same key. Hence, the sender and the re- ceiver have to agree on the key they will use before perform- ing any secure communication. Therefore, it is not possi- ble for two ... Corporation EURASIP Journal on Information Security Volume 2007, Article ID 13801, 10 pages doi:10.1155/2007/13801 Review Article A Survey of Homomorphic Encryption for Nonspecialists C...

Ngày tải lên: 22/06/2014, 06:20

... quantization due to the ADC for CPM modulation. For a BER of 10 −3 , the performance degradation is about 1 dB for an ADC with 5 bits. With an additional bit, performance degradation becomes ... nonlinearity on BER performance Figure 16 shows the impact of inband distortion due to PA nonlinearity on the performance of OQPSK for different values of backoff.Withabackoff of 5 dB, the perfor...

Ngày tải lên: 22/06/2014, 19:20

... RTP payload format for generic forward error correction,” Internet Engineering Task Force Request for Comments 2733, December 1999. [18] A. H. Li, “RTP payload format for generic forward error ... parameter sets. The RTP payload format spe cification for H.264/AVC [11] includes the syntax and semantics of the RTP payload format, RTP packetization rules for H.264/AVC, informative RTP...

Ngày tải lên: 22/06/2014, 19:20

... 11: BER performance of CPM with ZF equalizer for different receivers. Jimmy Nsenga et al. 13 6.4.2. CPM Figure 15 shows the effect of quantization due to the ADC for CPM modulation. For a BER of ... nonlinearity on BER performance Figure 16 shows the impact of inband distortion due to PA nonlinearity on the performance of OQPSK for different values of backoff.Withabackoff of 5 dB, the perf...

Ngày tải lên: 22/06/2014, 22:20

... objects. For virtual environments we require a minimal set of resonators that can be easily adapted to a wide variety of sounds and that are efficient. The earliest forms of resonator used for this ... that for instance a large plate of metal can be used to create echoes and reverberation. For less dense, more damped material such as wood, noticeable diffuse resonance occurs at modest si...

Ngày tải lên: 21/06/2014, 07:20