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In this contribution, we investigate the impact of channel correlation on the ergodic capacity, capacity statistics and symbol error rate (SER) for maximal ratio combiner (MRC) multichannel diversity systems over correlated Rayleigh fading channels. We derive exact closed-form expressions for average channel capacity, an upper bound and its asymptotically tight approximation. The capacity statistics...
In this paper, we derive closed form expressions for average symbol error rate of M-ary signalling for MIMO-MRC (MRT) systems over Rayleigh fading channels taking account of channel estimation errors. Following the moment generating function (mgf), we formulate the final expressions in the form of hypergeometric functions. The expressions are valid for an arbitrary number of antennas and any modulation...
In this paper we derive closed-form expressions for the single-user capacity of selection combining diversity (SCD) system, taking into account the effect of imperfect channel estimation at the receiver. The channel considered is a slowly varying spatially independent flat Rayleigh fading channel. The complex channel estimate and the actual channel are modelled as jointly Gaussian random variables...
In this paper we derive closed-form expressions for the single-user capacity of selection combining diversity (SCD) system, taking into account the effect of imperfect channel estimation at the receiver. The channel considered is a slowly varying spatially independent flat Rayleigh fading channel. The complex channel estimate and the actual channel are modelled as jointly Gaussian random variables...
The clipping and filtering method is analyzed in terms of power savings. The analysis takes account of the gain in the amplifier efficiency due to peak-to-average-power-ratio (PAPR) reduction. Assuming a linear amplifier and a typical digital signal processor, the power savings is shown to be in the order of Watts.
A new scheme for iterative clipping and filtering (ICF) method is proposed for PAPR (peak-to-average power ratio) reduction of OFDM (orthogonal frequency division multiplexed) signals. The proposed one-iteration-clipping-filtering (OICF) scheme achieves target PAPR in one iteration, instead of K (>1) iterations as in conventional ICF method. An empirical expression is derived to scale original...
The study investigated the dependance of absorbed mobile phone radiation in terms of specific absorption rate (SAR) values on head size. A dipole and a generic phone model were used to simulate mobile phone at 900/835 MHz, and standard SAM phantom as an adult head model. Three child head models were derived after uniformly scaling down standard head in all directions by 90%, 80% and 70%. A numerical...
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