http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Performance Analysis of Switched Diversity Combining System
Lingwei Xu,Hao Zhang,T. Aaron Gulliver 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.2
The average symbol error probability (ASEP) and outage probability (OP) performance of the switched diversity combining (SDC) system over N-Nakagami fading channels is investigated in this paper. The probability density function (PDF) of the signal-to-noise ratio (SNR) is used to derive exact and approximate ASEP expressions for phase shift keying (PSK) and pulse amplitude modulation (PAM). Exact closed-form expressions for OP of the SDC system are also presented. The ASEP and OP performance under different conditions is evaluated through numerical simulation to verify the analysis. Results are presented which show that the performance of the SDC system is improved when the number of diversity branches and the fading coefficient is increased, but is degraded as the number of cascaded components is increased.
Performance Analysis of IDF Relaying M2M Cooperative Networks over N-Nakagami Fading Channels
( Lingwei Xu ),( Hao Zhang ),( T. Aaron Gulliver ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.10
Exact average bit error probability (BEP) expressions for mobile-relay-based mobile-to-mobile (M2M) cooperative networks with incremental decode-and-forward (IDF) relaying over N-Nakagami fading channels are derived in this paper. The average BEP performance under different conditions is evaluated numerically to confirm the accuracy of the analysis. Results are presented which show that the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power allocation parameter have a significant influence on the average BEP performance.
Joint TAS and Power Allocation for IHDAF Relaying M2M Cooperative Networks
( Lingwei Xu ),( Hao Zhang ),( T. Aaron Gulliver ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.5
The outage probability (OP) performance of multiple-relay-based incremental hybrid decode-amplify-forward (IHDAF) relaying mobile-to-mobile (M2M) networks with transmit antenna selection (TAS) over N-Nakagami fading channels is investigated in this paper. The closed-form expressions for approximate OP of the optimal and suboptimal TAS schemes are derived. The power allocation problem is formulated for performance optimization. Then the OP performance under different conditions is evaluated through numerical simulations to verify the analysis. The simulation results showed that optimal TAS scheme has a better OP performance than suboptimal TAS scheme; the power-allocation parameter has an important influence on the OP performance.
Performance Analysis of SEC-SC System
Lingwei Xu,Hao Zhang,T .Aaron Gulliver 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.6
In order to achieve the balance between implementation complexity and system performance, a new hybrid combining technique named SEC-SC is proposed in this paper, which is composed of switch-and-examine combining (SEC) and selection combining(SC).The average symbol error probability (ASEP) and outage probability (OP) of the SEC-SC system over N-Nakagami fading channels is investigated. The exact ASEP expressions are derived for several modulation schemes, including phase shift keying (PSK), quadrature amplitude modulation (QAM), and pulse amplitude modulation (PAM). The exact closed-form OP expressions are also presented. Then the ASEP and OP performance under different conditions is evaluated through numerical simulations to verify the analysis. The simulation results showed that the performance of the SEC-SC system is improved with the diversity branches and the fading coefficient increased, but the level of improvement is declined as the number of cascaded components increased.
End-to-End Performance Analysis of AF Relaying M2M Cooperative System
Lingwei Xu,Hao Zhang,Jingjing Wang,Wei Shi,T. Aaron Gulliver 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.9
In this paper, the end-to-end performance of the mobile-relay-based mobile-to-mobile (M2M) system with amplify-and-forward (AF) relaying over N-Nakagami fading channels is investigated. The exact closed-form expressions for the lower bound on average symbol error probability (ASEP) and upper bound on channel capacity are derived. Then the ASEP and channel capacity performance under different conditions is evaluated to confirm the accuracy of the analysis. Results are presented which show that the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power-allocation parameter have an important influence on the ASEP and channel capacity performance.
Performance Analysis of the M2M Network over Keyhole Nakagami Fading Channels
Lingwei Xu,Hao Zhang,Tingting Lu,Zengfeng Wang,T. Aaron Gulliver 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.7
The performance of the mobile-to-mobile (M2M) network over keyhole Nakagami fading channels is investigated in this paper. Using the method of the probability density function (PDF) of the signal-to-noise ratio (SNR), the exact and approximate closed-form average symbol error probability (ASEP) expressions are derived for pulse-amplitude modulation (PAM), phase shift keying (PSK),and frequency shift keying modulation (FSK). The exact closed-form expressions for channel capacity are also presented. Then the ASEP and channel capacity performance under different conditions is evaluated through numerical simulations to verify the analysis. The simulation results showed that the performance of the M2M network is improved with the transmitting/receiving antennas and the fading coefficient increased.
Outage Probability Analysis of the VAF Relaying M2M Networks
Lingwei Xu,Hao Zhang,Tingting Lu,T. Aaron Gulliver 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.5
Based on variable-gain amplify-and-forward (VAF) relaying scheme, the lower bound on outage probability (OP) of the mobile-relay-based mobile-to-mobile (M2M) networks over N-Nakagami fading channels is investigated in this paper. By the method of the harmonic mean of positive random variables, the exact closed form expression of the lower bound on OP is derived. Then the OP performance under different conditions is evaluated through numerical simulations. The numerical simulation results coincide with the theoretical results well, and the accuracy of the analytical results is verified. The simulation results showed that: the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power-allocation parameter have an important influence on the OP performance.
Performance Analysis of FAF Relaying M2M Cooperative Networks over N-Nakagami Fading Channels
Lingwei Xu,Hao Zhang,Xing Liu,T. Aaron Gulliver 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.5
In this paper, the performance of fixed-gain amplify-and-forward (FAF) relaying is investigated. An approximation for the average symbol error probability (SEP) is derived for multiple-mobile-relay-based mobile-to-mobile (M2M) cooperative networks over N-Nakagami fading channels. The moment generating function (MGF) method is used to obtain average SEP expressions for various modulation techniques. The performance under different conditions is evaluated through numerical simulation to verify the analysis. These results show that the number of mobile relay nodes, the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power allocation parameter have a significant impact on the SEP performance.
Performance Analysis of the MRC M2M System
Lingwei Xu,Hao Zhang,Tingting Lu,Xing Liu,T. Aaron Gulliver 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.2
The average symbol error probability (ASEP) of a mobile-to-mobile (M2M) system employing maximal ratio combining (MRC) over N-Nakagami fading channels is investigated in this paper. The characteristic function (CF) of the signal-to-noise ratio (SNR) at the MRC output is used to derive exact ASEP expressions for several q-ary modulation schemes, including phase shift keying (PSK) modulation, quadrature amplitude modulation (QAM), and pulse amplitude modulation (PAM). Then the ASEP performance under different channel conditions is evaluated through numerical simulation to verify the analysis. These results show that the performance of the MRC M2M system is improved as the number of diversity branches or the fading coefficient is increased. Conversely, performance is degraded as the number of cascaded components is increased.
Performance Analysis of the Home M2M Cooperative Networks
Lingwei Xu,Hao Zhang,Tingting Lu,T A Gulliver 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.4
Based on decode-and-forward (DF) relaying scheme, the exact closed-form expression of the outage probability (OP) for the home mobile-to-mobile (M2M) cooperative networks over N-Nakagami fading channels is derived in this paper. Then the OP performance under different conditions is evaluated through numerical simulations. The numerical simulation results coincide with the theoretical results well, and the accuracy of the theoretical results is verified. The simulation results showed that: the fading coefficient, the number of cascaded components, the relative geometrical gain, and the power-allocation parameter have an important influence on the OP performance.