Báo cáo hóa học: "Research Article Efficient Transmission Schemes for Multiuser MIMO Downlink with Linear Receivers and Partial Channel State Information" potx

... 3, pp. 1086–1107, 2008. [26] M. Eslami and W. A. Krzymie ´ n, “Scheduling for MIMO broadcast channels with linear receivers and partial channel state information,” in Proceedings of the IEEE ... protocol and not the transmission scheme itself. In this paper, we present a transmission scheme for MU -MIMO downlink using eigenmode transmission, and ZF linear p...

Ngày tải lên: 21/06/2014, 17:20

... August 2005. [6] B. Bandemer, M. Haardt, and S. Visuri, Linear MMSE multiuser MIMO downlink precoding for users with multiple antennas,” in Proceedings of the IEEE Personal, Indoor and Mobile Radio ... “Joint precoding and beamforming design for the downlink in a multiuser MIMO system,” in Proceedings of the IEEE International Conference on Wireless and Mobile Compu...

Ngày tải lên: 21/06/2014, 20:20

... io [16] with 57 cells and 10 users per cell we would have 10 57 addends. Unfortunately, due to the nonlinearity of the 1/x function, there is no way to separate the random var iables and thereby ... Communications and Networking Volume 2010, Article ID 282465, 15 pages doi:10.1155/2010/282465 Research Article Efficient Uplink Modeling for Dynamic System-Level Simulations of Cel...

Ngày tải lên: 21/06/2014, 11:20

... based inference, EM with MCMC inference, EM with forward approximate inference I, EM with backward approximate inference I, EM with forward approximate inference II, and EM with backward approximate ... represent probability 1 and white probability 0. (a) Forward pass with 0- order model. (b) Forward pass with 1-order model. (c) Forward pass with 2-order model. (d) Backwar...

Ngày tải lên: 21/06/2014, 05:20

... use a Ricean fading broadband channel model. All of the stations except for the AP are randomly distributed in a circular area with a diameter of 100 meters and move randomly at a speed of 1 m/sec. ... (DSLs). Since the wired channel is slowly time-varying, the receiver can provide reliable channel state information to the transmitter using robust feedback channel. Therefore, a...

Ngày tải lên: 21/06/2014, 17:20

... the MAC. The 802.11e standard suggests a specific access category (AC) for video traffic and recommends priorities 4 and 5 for video. However, this assignment is not mandatory and user-defined mechanisms ... BKGND EDCA with error and 30 stations BKGND EDCA no error and 30 stations BKGND CAPS no error and 30 stations BKGND CAPS with error and 6 stations BKGND EDCA with erro...

Ngày tải lên: 21/06/2014, 23:20

... CFO and channel for the uplink of multiuser MIMO- OFDM systems in frequency selective fading channels. An asymptotic Cramer- Rao bound for joint CFO and channel estimation in the uplink of MIMO- Orthogonal ... offset and channel estimators for uplink MIMO- OFDMA systems,” IEEE Transactions on Signal Pro- cessing, vol. 56, no. 3, pp. 964–979, 2008. [16] J.Chen,Y.C.Wu,S.Ma...

Ngày tải lên: 21/06/2014, 05:20

... random delay line modulation and a series of “pre-echoes” before each of Table 2: Multiplications required (per sample period at full f s )for effect structure, broken into sections and shown with ... associated with this work [13], and present the impulse responses of the original and modified structures, the impulse responses of the original and modified C lf structures alone,...

Ngày tải lên: 21/06/2014, 05:20

... coherence bandwidth of the channel to be small enough (or channel dispersion to be long enough) so that the channel response on the desired tone and its mirror tone are linearly independent. If the channel ... training-based compensa- tion schemes for OFDM systems impaired with transmitter and receiver IQ imbalance. The proposed schemes can decouple the compensation of the...

Ngày tải lên: 21/06/2014, 08:20

... moves toward a randomly selected location at a speed uniformly distributed between 0 and max speed and then pauses for a configured time, before selecting another random location and repeating the ... DMHBGKA scheme outperforms other methods in terms of rekeying performances, computation and communication costs, and overhead. Importantly, the proposed schemes are efficient and sc...

Ngày tải lên: 21/06/2014, 11:20