نتایج جستجو برای: error rate becomes 5
تعداد نتایج: 2298905 فیلتر نتایج به سال:
In OFDM transmission, a loss of subcarrier orthogonality due to Doppler-spread of the channel leads to inter-carrier interference(ICI), especially, under mobile reception environments. ICI causes significant degradation of bit error rate characteristics and this influence becomes larger as the carrier frequency or moving velocity of the receiver increases. In this paper, a method to reduce the ...
A multiple description transform coding (MDTC) method has been reported previously. The redundancy rate distortion (RRD) performance of this coding scheme for the independent and identically distributed (i.i.d.) two-dimensional (2-D) Gaussian source has been analyzed using mean squared error (MSE) as the distortion measure. At the small redundancy region, the MDTC scheme can achieve excellent R...
This paper analyzes the bit error rate performance of orthogonal frequency-division multiplexing systems in mobile multihop relaying channels. We considered the uplink scenario and quantified the effects of mobile channel impairments such as Doppler shift due to user mobility per hop, high power amplifier distortions when amplifying the transmitted/ relayed orthogonal frequency-division multipl...
Recently, heterogeneous networks with wired and wireless links are becoming common. However, the performance of TCP data transmission deteriorates significantly over such networks because of packet losses caused by the high bit error rate of wireless links. We had proposed receiver-based ACK splitting mechanism to solve that problem previously. Our mechanism does not need modifications to the s...
In conventional quantum key distribution (QKD) protocols, security is guaranteed by estimating the amount of leaked information through monitoring signal disturbance, which, in practice, is generally caused by environmental noise and device imperfections rather than eavesdropping. Such estimation therefore tends to overrate the amount of leaked information in practice, leads to a fundamental th...
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