space-time transmit antenna diversity
New metrics for space-time decoding with imperfect synchronization
... smart antenna technology in their ...MA transmit diversity is employed in downlink of a wireless system to enhance the capacity and expand the coverage of the broadcasted signal ...
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A Simple Differential Modulation Scheme for Quasi Orthogonal Space Time Block Codes with Partial Transmit Diversity
... receive antenna in a Rayleigh slow and flat fading ...slowly time-varying channel, but since the decoding algorithm does not rely on channel coherence over more than two time slots, the perfor- mance ...
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Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas
... the diversity of this ...dispersion space-time code and transmit to the ...a diversity of min { M, N } R if M / = N and MR (1 − (1/M)(log log P/ log P)) if M = N can be achieved, where ...
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Performance Analysis of Transmit Diversity and Spatial Multiplexing MIMO modes Vs. SISO System in LTE-Downlink System
... as Transmit diversity and Spatial Multiplexing mode. In diversity mode, the same signal is transmitted over multiple antenna and hence the its improves system reliability of the system by ...
5
Increased diversity space time coding using the diversity transform
... spatial diversity gain of N · mn, while that of the first scheme depends on the temporal diversity gain provided by the diversity ...four transmit, two receive antennas (with no DRT) reveal ...
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An FPGA implementation of Alamouti's transmit diversity technique
... Alamouti’s transmit diversity scheme was the first example of a space-time code which requires only linear processing at the ...Previous space-time coding schemes used trellis ...
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Novel polar coded space time transmit diversity scheme over Rician fading MIMO channels
... STTD system as shown in Fig. 5. On the other hand, as the number of antennas increases, STC becomes a more dominant influence factor on BER performance than vari- able Rician K-factor. Figure 4 shows that there is only ...
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Space time code design and its applications in wireless networks
... of space-time codes in wireless net- works, or what we call the distributed space-time ...dispersion space-time codes in wireless relay networks with a two-step ...that ...
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Review on STBC coded MISO and MIMO in Frequency Selective Wireless Fading Channel
... two antenna transmit diversity scheme is one example of a general technique known as Space Time Block ...Coding. Space Time Block Codes are special codes that provide ...
5
Title: Improved Space Time Block Coding Diversity Technique for Rayleigh Fading Channel in Wireless Systems
... Multiple antenna technology can also be used to increase the data rate (spatial multiplexing) instead of improving ...of transmit antennas is larger than two. Space-time coding can improve ...
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Performance of Wideband CDMA Using Space Time Spreading over Multipath Nakagami Fading Channels
... the time-varying characteristics of the ...the time- varying effects of wireless channels is employing ...years, space-time coding has received much attention as an effective transmit ...
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Differential Detection of Space Time Spreading with Two Transmit Antennas
... Receive diversity has been well known as one powerful tech- nique to mitigate the e ff ect of fading and shadowing for high-rate data transmission over wireless hostile ...receive diversity at the mobile ...
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Full Rate Full Diversity Linear Quasi Orthogonal Space Time Codes for Any Number of Transmit Antennas
... We plot the symbol error rate (SER) versus the average SNR per receive antenna in Figure 3 with QPSK modulation for M = 4, 8, 16, 32 and N = 1. The elements of H are assumed to be i.i.d. and CN (0, 1). For M = 4, ...
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Performance Evaluation of MIMO system over AWGN and Rayleigh Fading with Maximal Ratio Receiver Combining Diversity Scheme
... two transmit antennas and two receive antennas were ...of transmit antennas, which can achieve the full diversity promised by the transmit and receive antennas [6], ...of ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami m Fading Channels
... the time-varying char- acteristics of the ...the time-varying effects of wireless channels is em- ploying ...years, space-time coding has re- ceived much attention as an effective ...
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Performance Comparison of MPAM and MQAM in Nakagami m and Rician Fading Channel
... using space time transmit diversity ...with space time transmit diversity (STTD) is obtained by averaging the conditional BER over the probability density function ...
5
Performance Analysis of a Wireless CDMA Transmission System with Receiver Diversity Schemes
... multipath diversity of the channel [16]. Pre-RAKE diversity combining are proposed for the downlink channel to achieve multipath diversity without the burden of the RAKE receiver at the ...[19], ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... The system considered in this paper is an orthogonal MC DS-CDMA scheme [5], [8] using number of subcarriers, number of transmitter antennas, and one receiver antenna. Fur- thermore, in this paper, a synchronous MC ...
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Super-Orthogonal Space-Time Turbo Transmit Diversity for CDMA
... when transmit diversity is considered, this situation (from a coding perspective) is improved due to the introduction of additional MAI as a result of the multi- ple transmission paths that are created ...
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Achieving Directionality and Transmit Diversity via Integrating Beam Pattern Scanning (BPS) Antenna Arrays and OFDM
... of antenna arrays with scanning beam patterns, and Orthogonal Frequency Division Multiplexing (OFDM) ...Controlled time varying phase shifts are applied to the antenna array elements mounted at the ...
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