Iterative receiver design for broadband wireless communication systems via expectation maximization (EM) based algorithms

... ITERATIVE RECEIVER DESIGN FOR BROADBAND WIRELESS COMMUNICATION SYSTEMS VIA EXPECTATION MAXIMIZATION (EM) BASED ALGORITHMS THE-HANH PHAM (B Eng., Hanoi ... recommendations for future works Chapter Overview of Expectation Maximization (EM), Expectation Conditional Maximization (ECM) and Space-Alternating Generalized EM (SAGE) Algorithms 2.1 Expectat...

Ngày tải lên: 12/09/2015, 08:19

... …………………………………………………… 47 3.6 Sequential Monte Carlo Methods …………………………… 51 2.3.2 2.3.3 Iterative Receiver Design for MIMO- OFDM Systems via Sequential Monte Carlo (SMC) techniques ………………………… 53 ... ITERATIVE RECEIVER DESIGN FOR MIMO- OFDM SYSTEMS VIA SEQUENTIAL MONTE CARLO (SMC) TECHNIQUES BAY LAY KHIM (B.Eng.(Hons.), NUS) A THESIS SU...

Ngày tải lên: 08/11/2015, 17:16

... Advances in Signal Processing [25] K M Wu and C L Wang, “Soft-input soft-output partial parallel interference cancellation for DS-CDMA systems, ” in Proceedings of the International Conference on Communications ... selection/maximal ratio combining and synchronous DS-CDMA, and recall the main functioning EURASIP Journal on Advances in Signal Processing principles o...

Ngày tải lên: 21/06/2014, 05:20

... impedance bandwidth The broadband design of dual and circularly polarized antennas demands precise wideband control of individual orthogonal radiated polarizations Dual linear polarization is attained ... operating bandwidth This thesis presents the broadband design of dual and circularly polarized antennas, and the bandwidth definitions are first established 1....

Ngày tải lên: 02/10/2015, 12:56

... SNR (dB) Q -OFDMA P = 64 Q -OFDMA P = 16 OFDMA1 OFDMA2 OFDMA3 Figure 5: BER of uncoded systems with BPSK modulation under CM2 channel model, where N = 256 the system performance and Q -OFDMA is inferior ... 16 SNR (dB) Q -OFDMA, ZF, no iteration Q -OFDMA, MMSE, no iteration Q -OFDMA, MMSE, iterations Q -OFDMA, MMSE, iterations Q -OFDMA, FD-DFE Figure 6: BER performance comparison betwee...

Ngày tải lên: 21/06/2014, 23:20

... a transmitted- reference UWB receiver, ” Wireless Communications and Mobile Computing, vol 5, no 5, pp 537–549, 2005 [17] Y Wang, G Leus, and A.-J van der Veen, “On digital receiver design for transmitted ... employ Lw = 30 ns for synchronization Figure 11 shows the BER performance The BER performance for the MF equalizer (lines with ◦ markers) approaches after 12 dB, while...

Ngày tải lên: 21/06/2014, 23:20

... heterodyne receiver, the carrier frequency ω is close to the local oscillator frequency ω0 50 Ω LO Figure 3: Layout of the V-band multiport circuit Therefore, these receivers are low IF heterodyne receivers ... proposed multiport approach This conventional receiver can be implemented using a V-band downconverter mixer (a balun and two Schottky diodes, e.g.) and a IF I/Q mixer I...

Ngày tải lên: 22/06/2014, 22:20

... servicing the traffic demands, and at the same time fulfill the GoS constraints of the individual radio systems Finally, we conclude the thesis with the presentation of the thesis contributions and the ... detect the spectrum holes In such a scenario, the SRs are not required to perform spectrum sensing but rely on the information from the sensor network for...

Ngày tải lên: 11/09/2015, 09:09

... Fig.1.2 with interleaved subcarrier allocation for the two users 1.4 Motivations in OFDMA- based resource allocation The main allocation issue in OFDMA- based resource allocation is to jointly optimize ... algorithms for OFDMA- based resource allocation in systems such as Single Input Single Output (SISO) - OFDMA, Multiple Input Multiple Output (MIMO) - OFDMA,...

Ngày tải lên: 11/09/2015, 10:15

... for phased array antennas for more than half a century [17] Generally, there are three types of phase shifters: mechanical phase shifters, ferrite phase shifters and semiconductor device phase shifters ... loaded-line phase shifters, switched network phase shifters, reflection type phase shifters and vector summation phase shifters 2.1.1 Loaded-line Phase Shifter T...

Ngày tải lên: 12/09/2015, 09:21

... detection techniques for multipleinput multiple- output systems As received signals of multiple- input multiple- output systems may contain much more severe interferences compared to single -input singleoutput ... REDUCED- COMPLEXITY SIGNAL PROCESSING TECHNIQUES FOR MULTIPLE- INPUT MULTIPLE- OUTPUT STORAGE AND WIRELESS COMMUNICATION SYSTMES LI HUANG...

Ngày tải lên: 14/09/2015, 14:12

... 3.3 Discrete Fourier Transform Spread OFDM (DFTSOFDM) Systems OFDM system, with its advantages, is currently an effective scheme for wireless communications However, the major disadvantage of OFDM ... conventional FDM and OFDM Let sk for k = 0, 1, · · · N − be the source complex symbols of OFDM system Chapter Discrete Fourier Transform Spread OFDM (DFT-...

Ngày tải lên: 10/11/2015, 11:00

... efficient and secure anonymous authentication scheme for mobile satellite communication systems Compared with the above-related schemes, the proposed scheme achieves the following three main advantages: ... referred to [28] for more complete references Conclusion Based on Chen et al.’s scheme, this paper proposed a new efficient and secure anonymous authentic...

Ngày tải lên: 21/06/2014, 00:20

... targeted for low-cost and lowpower 60 GHz communications systems and are evaluated and compared by considering the effects of front end nonideality The authors found that OQPSK with FDE and nonfractional ... heterodyne architecture can enable the compact and low-cost millimeter-wave receivers for the future wireless communications systems such as the IEEE 802.15.3c wireless per...

Ngày tải lên: 22/06/2014, 19:20

... coding for wireless relay networks,” to appear in IEEE Transactions on Communications T Kiran and B S Rajan, “Partially-coherent distributed spacetime codes with differential encoder and decoder,” ... hop uses three relays while the second hop uses only two Though the performance is better, the diversity is two CONCLUSION In this paper, we considered a wireless relay network with mul...

Ngày tải lên: 22/06/2014, 19:20