Adaptive transmission techniques in wireless fading channels

... ADAPTIVE TRANSMISSION TECHNIQUES IN WIRELESS FADING CHANNELS CHEN XUN A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING NATIONAL ... two independent cataloging mechanisms are set up The type of the fading is said to be frequency-selective fading or flat fading based on delay spread, while it is said to be fast fading...

Ngày tải lên: 26/09/2015, 11:07

... HIGH CAPACITY HIGH SPECTRAL EFFICIENCY TRANSMISSION TECHNIQUES IN WIRELESS BROADBAND SYSTEMS ZHOU KAINAN (B Eng., Beijing University of Posts and Telecommunications., P R China) A THESIS ... extensive study on the high capacity high spectral efficiency transmission techniques in wireless broadband systems supporting multiclass services In Chapter 2, w...

Ngày tải lên: 15/09/2015, 17:11

... paper, we investigated the impact, at both physical and TCP levels, of different combining techniques for the downlink of MC-CDMA systems By means of an integrated platform carefully taking into account ... Considering that, exploiting the orthogonality of the code, all the different users use the same carriers, the total transmitted signal results in (being in...

Ngày tải lên: 22/06/2014, 06:20

... interest, say of user 1, is the user to be acquired in the presence of intersymbol interference (ISI) and multiple-access interference (MAI) The information about the in- cell and inter-cell interferers ... considered in the presence of frequency-selective multipath fading Users ∼ Kintra are assumed to be users in the active cell and users ∼ Kinter are the intercell interferers...

Ngày tải lên: 22/06/2014, 23:20

... DCS (17 10 -18 80 MHz), PCS (18 50 -19 90 MHz), UMTS 210 0 (19 20- 217 0 MHz), WLAN + Bluetooth (2400-2480 MHz), WiMAX (2500-2690 MHz), HiperLAN/2 in Europe ( 515 0-5350 / 5470-5725 MHz) and IEEE 802 .11 a in ... Between 802 .16 e & 802 .11 s Tarek Bchini and Mina Ouabiba 295 297 Inter-Domain Handover in WiMAX Networks Using Optimized Fast Mobile IPv6 319 Seyyed Masoud Seyyedoshohad...

Ngày tải lên: 20/06/2014, 23:20

... 1600–3000 58.5, 1 620 29 60 58 .2, 1630 29 70 7.5, 4880– 526 0 5.8, 5180–5490 16.1, 5040–5 920 Fig 15(b) 26 26 26 2 20 20 20 - 6.0 8.0 10 61.4, 1570 29 60 49.4, 1600 26 50 51 .2, 1570 26 50 13 .2, 520 0–5935 10.0, ... 3.3 2. 3 3.3 2. 9 3.5 1.6 1.8 1.1 1.8 1.3 2. 2 2. 1 Table Summarized results of the antenna gains Antenna Gain (dBi) Iteration 3.1 2. 5 3.3 2. 1 3.3 2. 8 3.5 1.5...

Ngày tải lên: 20/06/2014, 23:20

... the reflector and the feed line is influential in determining the operating frequency of the antenna If the height is larger than 52 Advanced Transmission Techniques in WiMAX its optimized height, ... results in different gain and HPBW By turning ON the first switch of the EBRS, gain and HPBW of 4.85 dB and -65° to 70° are obtained respectively, as shown in figure 3( a) While...

Ngày tải lên: 20/06/2014, 23:20

... 300 40 0 500 600 Time(sec) 700 800 900 1000 (3.1) 86 Advanced Transmission Techniques in WiMAX -9 14 jitter mean x 10 mean over 64 seconds 12 10 me -2 -4 -6 2000 40 00 6000 8000 10000 12000 140 00 ... oscillating frequency controlling algorithm  84 Advanced Transmission Techniques in WiMAX 3.2 Clock reference controlling scheme The controlling scheme is a hybrid one...

Ngày tải lên: 20/06/2014, 23:20

... Amplitude Modulation Single Input Multiple Output Single Input Single Output Spatial Multiplexing Signal To Noise Ratio 1 26 STBC TACS TDD UPA ZF Advanced Transmission Techniques in WiMAX Space-Time ... because both of them are required for 4TX combining 138 Advanced Transmission Techniques in WiMAX Symbol level Buffer Subpacket Combining Soft Bit demapping    h0 s ...

Ngày tải lên: 20/06/2014, 23:20

... multiplied with a part of the frame This frame can be 218 Advanced Transmission Techniques in WiMAX in Gaussian shape, cosine, Kaiser or Hanning window, respectively In companding method the OFDM ... signal into digital format and then expands it The companding method has application in speech processing where high peaks occur infrequently In PTS, by partitioning the input...

Ngày tải lên: 20/06/2014, 23:20

... defined in OFHS instead of reactive mode defined in the RFC5270 The semi-predictive mode procedure is shown in Fig Fig OFHS Handover Procedure, Semi-Predictive Mode Inter-Domain Handover in WiMAX ... receiving the FBack, the mobile node link layer is signalled by its network layer through a LSW to manage handover by sending a Mobile 326 Advanced Transmission Techniques in W...

Ngày tải lên: 20/06/2014, 23:20

... Cite this article as: Chin: Channel length assisted symbol synchronization for OFDM systems in multipath fading channels EURASIP Journal on Wireless Communications and Networking 2011 2011:68 Received: ... Chen, A blind synchronizer for OFDM systems based on SINR maximization in multipath fading channels IEEE Trans Veh Technol 58(2), 625–635 (2009) 19 WL Chin,...

Ngày tải lên: 21/06/2014, 00:20

... Genova, Italy, June 2009 [12] I Bahceci and A K Khandani, “Linear estimation of correlated data in wireless sensor networks with optimum power allocation and analog modulation,” IEEE Transactions ... Power Allocation with Perfect CSI 3.1 Minimization of the Distortion Subject to the Power Constraint We base our adaptive power allocation design on the...

Ngày tải lên: 21/06/2014, 17:20

... FF information Receive FB information Determine FB information using CSI and FF information Transmit data using rate and power determined from buffer state and FB information Transmit FB information ... in formulating the optimization problem in the presence of transmit buffer information at the receiver 3.1 Channel Quantizer Specification In this case, since...

Ngày tải lên: 21/06/2014, 22:20