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The performance of differential pulse position modulation (DPPM) 60 GHz impulse radio (IR) systems with multiple receive antennas is studied in this paper. We derive the capacity and error probability of DPPM 60 GHz IR systems over AWGN channels. These results are then extended to Nakagami-m fading channels. Performance results show that DPPM is superior to pulse position modulation (PPM) in terms...
This paper considers the channel capacity of a 60 GHz wireless communication system over Ricean fading channels. The analysis is based on a link budget model. Phase shift keying (PSK) modulation is examined under FCC power constraints for the unlicensed 59–64 GHz radio spectrum. The channel capacity over a Ricean fading channel is compared with the capacity in an additive white Gaussian noise channel...
The capacity of differential pulse-position modulation (DPPM) is considered in this paper. Since the formula of Shannon Capacity is effective only in the AWGN channel with continuous-valued inputs and outputs, while the channel employing M-ary DPPM modulation has discrete-valued inputs and continuous-valued outputs, we derive the modified formula which applies to calculate the capacity of a UWB system...
This paper calculates the channel capacity of 60 GHz wireless communication systems over indoor line-of-sight (LOS) and non-line-of-sight (NLOS) channels based on a 60 GHz link budget model. The SNR and therefore capacity varying according to the communication distance are researched. The simulation result shows that the channel capacity falls sharply as distance increasing, especially in NLOS channel...
In this paper, we determine the channel capacity of 60 GHz wireless communications over additive white Gaussian noise channels. The channel capacity with phase shift keying (PSK) is investigated under FCC power constraints for the unlicensed 59- 64 GHz radio spectrum. It is shown that the capacity of 60 GHz wireless communications is a function of distance and signal to noise (SNR) ratio, which demonstrates...
In this paper, we determine the channel capacity of 60 GHz wireless communications over additive white Gaussian noise channels. The channel capacity with phase shift keying (PSK) is investigated under FCC power constraints for the unlicensed 59-64 GHz radio spectrum. It is shown that the capacity of 60 GHz wireless communications is a function of distance and signal to noise (SNR) ratio, which demonstrates...
In this paper, we study the capacity of non-orthogonal pulse position modulation (NPPM) for ultra-wideband (UWB) communication systems. The channel capacity of NPPM is determined for a time-hopping multiple access UWB system. It is shown that with proper selection of the pulse waveform and modulation index, NPPM can achieve a higher capacity than orthogonal PPM.
Recently, pulse position amplitude modulation (PPAM) has been proposed for ultra-wideband (UWB) communication systems. PPAM combines pulse position modulation (PPM) and pulse amplitude modulation (PAM) to provide better performance and higher system capacity with low computational complexity. A RAKE receiver can make use of the rich multipath of UWB systems to improve system performance and capacity...
In wireless communications, space time block coding (STBC) is a new technology with a promising future. In this paper, a direct sequence code division multiple access (DS-CDMA) system with STBC is studied. The system capacity and error rate performance are derived, for correlated Nakagami fading channels
The capacity and error probability of space-time block codes (STBC) are considered for PAM/PSK/QAM modulation in fading channels. The approach is based on an equivalent scalar AWGN (additive white Gaussian noise) channel with a channel gain proportional to the Frobenius norm of the matrix channel for the STBC. Using this effective channel, capacity and probability of error expressions are derived...
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