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This paper presents a strategy to allocate power both in space and time for beamforming orthogonal space-time block coded multiantenna systems with imperfect channel state information at the transmitter. Most of the existing schemes focus on spatial-only power allocation, while the temporal dimension is not well exploited. The proposed space-time strategy is developed by decoupling the temporal and...
This paper presents a strategy for allocating power in both space and time for beamforming space-time-coded multiantenna systems with imperfect channel state information at the transmitter (CSIT) over flat and quasi-static Rayleigh fading channels. We first develop a closed-form spatial-only (S-O) power allocation scheme based on a newly defined compressed signal-to-noise ratio (CSNR) criterion. The...
This paper presents a closed-form power allocation scheme for space-time coded multiple-antenna systems with imperfect channel state information at the transmitter. The proposed scheme is based on a so-called compressed signal-to-noise ratio (CSNR) criterion, where a single compression factor is used to minimize the bit-error-rate (BER). The obtained closed-form solution is computational efficient...
A generalized semi-blind channel estimator for OFDM using PSK signaling was proposed by the authors. It gives a significant performance gain over pilot-aided channel estimators and other semi-blind method. However, this algorithm does not work satisfactorily for the signaling of non-constant modulus. In this paper, we modify the algorithm to make it applicable to TCM-OFDM systems with biased-PSK-subset...
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