Báo cáo hóa học: "Research Article Advanced Receiver Design for Quadrature OFDMA Systems" doc

... Communications and Networking Volume 2009, Article ID 953018, 9 pages doi:10.1155/2009/953018 Research Article Advanced Receiver Design for Quadrature OFDMA Systems Lin Luo, 1, 2 Jian (Andrew) ... iteration Q -OFDMA, MMSE, no iteration Q -OFDMA, MMSE, 2 iterations Q -OFDMA, MMSE, 5 iterations Q -OFDMA, FD-DFE Figure 6: BER performance comparison between Q -OFDMA systems with...

Ngày tải lên: 21/06/2014, 23:20

... Wireless Communications and Networking Volume 2009, Article ID 315264, 17 pages doi:10.1155/2009/315264 Research Article Digital Receiver Design for Transmitted Reference Ultra-Wideband Systems Yiyin ... ranges. But in the medium range, T(x)withP = 3outperformsT  1 (x) for about 5% ∼ 10%. For P FA = 10 −3 and P FA = 10 −5 , the performance differences for these test statistics...

Ngày tải lên: 21/06/2014, 23:20

... radio interfaces for GSM can be implemented for such mobile platforms by using satellite connectivity for backhauling. Thus, DVB-S2/RCS appears an ideal candidate to be in- vestigated for mobile usage, ... simulation platforms used to evaluate the performance of DVB-S2 with advanced fade countermea- sures in the railway environment as described in Section 3 are duly detailed. 5.1....

Ngày tải lên: 22/06/2014, 19:20

... therefore x ∗ satisfies the original optimization problem. In other words, if we solve the reformulated problem for some λ ≥ 0 and get back a configuration for which  i B i (x i ) is C, for that ... was shown for the general case with multiple Lagrange multipliers by Everett [5]; for clarity I summarize his argument for the multiple- cell, single-λ case of (7)here. Theorem 1. For...

Ngày tải lên: 21/06/2014, 23:20

... Set  p [0] k = 0forallk. (2) Set t = t +1,foreachMSk (a) Calculate {w k,π k (1) , w k,π k (2) , , w k,π k (|π k |) } for all possible MBS sets π k by using (11). (b) Given the beamforming vectors for each ... “Guidelines for evaluation of radio interface technologies for IMT -Advanced, ” November 2008, http://www.itu.int/pub/R-REP-M.2135-2008 /en. 2 EURASIP Journal on Advances in Sig...

Ngày tải lên: 21/06/2014, 07:20

... estimator for the optimal 2P format. Extensions of this algorithm for joint carrier phase/Doppler-shift and Doppler-rate estimation for the 2P format, the 3P format, and the sub-optimum 4P format, ... the CRB for the estimation of Doppler-shift and Doppler-rate are derived. O ur analysis showed that the 2P format is optimum for Doppler-shift estimation and that the 3P format is opti...

Ngày tải lên: 22/06/2014, 19:20

... problem for an OFDMA relay network are studied; in this work, the relay node retransmits the information in the same subchannel as the source node. This assumption, however, limits the per- formance ... achieve a better complexity-performance tradeoff. A distributed bit loading algorithm is also proposed for ad hoc networks. Simulation results show that significant performance gains can b...

Ngày tải lên: 22/06/2014, 19:20

... method to design allotted LDPC codes for DMT channels. The method is general and can be used for every nonuniform channel. This method allows for design of optimized LDPC codes which outperform conven- tional ... Journal on Advances in Signal Processing Volume 2007, Article ID 76146, 9 pages doi:10.1155/2007/76146 Research Article LDPC Code Design for Nonuniform Power-Line C...

Ngày tải lên: 22/06/2014, 19:20

... either uniform QPSK or uniform 8-PSK without channel coding. (2) A 2-layer system using nonuniform 8-PSK without channel coding. (3) A single-layer system using either uniform QPSK or uniform 8-PSK ... performance of our proposed adaptive 2-layer modulation/coding scheme 7 Typically, for a uniform MPSK sig naling scheme, we would expect R (1) c ≤ R (2) c to optimize the performance. However...

Ngày tải lên: 22/06/2014, 19:20

... difference between the two values are as follows: 5.4framesforopen door, 4.1framesforclosedoor,3.3framesforpourwater,2.0 frames for erase board, and 6.2 frames for pick up object and put down elsewhere. 5.4. ... Journal on Advances in Signal Processing Volume 2007, Article ID 65989, 14 pages doi:10.1155/2007/65989 Research Article Mixed-State Models for Nonstationary Multiobject Acti...

Ngày tải lên: 22/06/2014, 23:20