time spreading
Adaptive Differential Space Time Spreading Assisted Turbo Detected Sphere Packing Modulation
... The detrimental effects of channel fading may be significantly re- duced by employing multiple-input-multiple-output (MIMO) schemes including space-time block codes (STBC) [10, 11], coherently de- tected ...
5
Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... frequency, time and spatial ...employs time and frequency (TF)-domain spreading, where a user-grouping technique is employed for reducing the effects of multiuser ...
5
Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... space–time spreading (STS)-assisted transmit diversity is investigated in the context of broadband communications over frequency-selective Rayleigh-fading ...employing time (T)-domain ...
10
Performance of Wideband CDMA Using Space Time Spreading over Multipath Nakagami Fading Channels
... space-time spreading based transmit diversity scheme and the conventional RAKE receiver arrangement using only one transmission antenna when com- municating over the flat-fading (for space-time ...
5
Downlink Space–Time Spreading Using Interference Rejection Codes
... space–time spreading (STS) scheme in comparison to that of classic Walsh code and pseudonoise code-based STS when communicating over dispersive Nakagami- m multipath ...
10
Differential Detection of Space Time Spreading with Two Transmit Antennas
... A differential detection scheme for space-time spreading with two transmit antennas is proposed. The scheme does not require channel state information at either the transmitter or the receiver. With ...
10
A CM based equalizer for space-time spreading over channels with inter-Symbol interference
... In the pioneering work by Alamouti [2], a transmitter di- versity scheme, named Space-Time Block Coding (STBC), was derived which maximizes the level of diversity obtained in flat fading channels. Inspired by ...
5
Antenna Selection and Space-Time Spreading Methods for Multiple-Antenna Systems
... In Chapter 2, we determine the fundamental information theoretic performance limits for a MIMO CDMA system. The performance of a CDMA system depends on the particular choice of spreading sequences. To remove this ...
127
Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... PERFORMANCE RESULTS In this section the BER performance of the downlink of a generalized MC DS-CDMA system employing SSTS and using 32-chip Walsh codes as T-domain spreading sequences as[r] ...
5
Broadband MC DS CDMA Using Space Time and Frequency Domain Spreading
... space-time spreading (STS) assisted transmit diversity and frequency-domain (F-domain) spreading is investigated in the context of broadband communications over frequency-selective Rayleigh fading ...
5
The Alamouti Scheme with CDMA-OFDM/OQAM
... CDMA spreading is carried out in the frequency domain, the Alamouti decoding scheme can only be applied if the channel is assumed to be ...CDMA spreading component has to be applied in the time ...
13
Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems
... both spreading in time and fre- quency domains to develop a scheme that has the potential of maximizing the achievable diversity in a multi-rate, multiple-access ...joint time-frequency 2-dimen- ...
13
Time-Frequency Based Channel Estimation for High-Mobility OFDM Systems–Part I: MIMO Case
... in time, that degrades the performance of OFDM ...a time-varying channel modeling and estimation method based on the Discrete Evolutionary Transform to obtain a complete characterization of MIMO-OFDM ...
8
A systematic review of computer-based softwares for educating patients with coronary heart disease
... Patient education is an important factor in doctor–patient communication. A patient with a greater knowledge is more likely to engage in an active communication with their doctor [3]. Research showed that patients ...
9
EC of some fractal set
... W, wherein the pixel corresponding to the point z is colored according to the smallest value of the positive integer n, such that f n (z ) V. A special color, such as black, may be used to represent points whose ...
7
Multiuser Detection in Multicarrier CDMA Systems Employing Both Time Domain and Frequency Domain Spreading
... Abstract— In this contribution we propose and study a mul- ticarrier direct-sequence code-division multiple-access (MC DS- CDMA) scheme, which employs both time (T)-domain and fre- quency (F)-domain ...
5
Numerical Modeling of Deformation, Oscillation, Spreading and Collision Characteristics of Droplets in an Electric Field
... Electrohydrodynamics (EHD) is the study of the fluid flow caused by electric forces. The earliest record of an EHD experiment is in William Gilbert’s seventeenth century treatise “De Magnete”, which describes the ...
179
Rumor Spreading: A Survey
... the spreading of rumors, and promote social harmony better, people study the rumor mainly from the rumor- making, rumor spreading, rumor recognition and other aspects of research, among them, the rumors ...
7
Dynamics of braze spreading
... The first and last stages when the interfacial microstructure is relatively stable can be modelled by mathematical relationships developed to describe the flow of i[r] ...
6