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The effect of nonlinear high power amplifiers (HPA) on the non-coherent detection algorithm was investigated for orthogonal space-time coded multi-level continuous phase modulation (OST-MCPM) transmission systems of two transmit antennas. The block-wise error probability (BWEP) performance of this non-coherent detection algorithm with linear and nonlinear HPA was analyzed. And the bit error rate (BER)...
We introduce in this paper a new kind of space time polarization block codes. The new codes can transmitted through dual-polarized antennas and received through dual-polarized antennas. Compared with traditional complex orthogonal space-time block codes, the new codes can reduce bit error rate.
In this paper we introduce a new kind of space time block code based on quaternion quasi-orthogonal design. The new code can transmitted through dual-polarized antennas and received through dual-polarized antennas. Compared with quasi-orthogonal space-time block codes, the new code can reduce bit error rate.
In cellular wireless communication systems, there have been various receiver-based techniques for performance improvement. However, it may be desirable to use transmitter- based techniques to improve the down-link capacity, since the implementation complexity is less critical at a base station (BS) than at a mobile station (MS). This paper presents a transmitter- based processing for the down-link...
In this paper we derive optimal power allocation (PA) in space and time that minimizes BER for transmitter selection in multi-input-single-output (MISO) Rayliegh fading channels assuming perfect channel state information (CSI) is available at receiver and transmitter. This power allocation scheme achieves exponential diversity order with a single RF front end and requires feedback of the best channel...
In this paper we derive optimal power allocation scheme that minimizes bit error rate (BER) while satisfying the average power constraint and peak to average power ratio (PAPR) constraint (which translates to minimizing the PAPR). The power allocation is done in space and time for multiple-input single-output (MISO) systems over Rayleigh flat fading channels assuming perfect channel state information...
In this paper, a novel approach using frame-based iterative channel fading parameters estimation technique from the received data sequence exploiting orthogonal property of the space-time block (STB) code is proposed. For practical implementation of STB code, the receiver requires to estimate these parameters. Regarding this type of estimation, the inherent orthogonal nature of STB code can be exploited...
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