Tài liệu Adaptive thu phát không dây P1 ppt

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Tài liệu Adaptive thu phát không dây P8 pptx

... the following set of simultaneous linear equations for the unknown weights W,: where Let (P11 p12 . 'p21 p22 . (8.43) (8.44) (8.45) 8.7. RADIAL BASIS FUNCTION NETWORKS 323 ... Equation 8.76 or adaptively using the LMS algorithm [253]. Note that apart from regularization, an alternative way of reducing the number of basis functions required and thus reduce the associated ... using the error back propagation algorithm has a slower convergence rate than the conventional adaptive equalizer using the Least Mean Square (LMS) algorithm described in Appendix A.2. This...

Tài liệu Adaptive thu phát không dây P9 pptx

... 9. RBF-EQUALIZED ADAPTIVE MODULATION in a four-mode adaptive PSK scheme did not achieved a better performance across the 1 BPS throughput range. Instead, this four-mode adaptive PSK scheme ... for the adaptive scheme and the BPSK scheme, the mean BPS for the adaptive scheme improved by a factor of 1 S, resulting in a mean BPS of 1.5. In the SNR range of 9dB to 16dB, the adaptive ... BPSK scheme and the adaptive scheme with transmission blocking, the mean BPS for the adaptive scheme improved by a factor of 2. As the SNR improved, the performance of the adaptive schemes both...

Tài liệu Adaptive thu phát không dây P13 ppt

... advances in the field of sophisticated adaptive OFDM schemes. 13.6 Adaptive OFDM 13.6.1 Survey and Motivation Steele and Webb [ 1,161 proposed adaptive modulation for exploiting the time-variant ... 535 Adaptive Wireless TranceiversL. Hanzo, C.H. Wong, M.S. YeeCopyright © 2002 John Wiley & Sons LtdISBNs: 0-470-84689-5 (Hardback); 0-470-84776-X (Electronic)554 CHAPTER 13. ADAPTIVE ... of an OFDM symbol. In this case, the frequency-domain transfer function is 546 CHAPTER 13. ADAPTIVE MULTICARRIER MODULATION 10.' 10-2 LC W m 10-3 I 0-4 8 B ) Fd=0.0064 10-54...

Tài liệu Adaptive thu phát không dây P15 pptx

... 5.44. Finally, adaptive TCM performed better, than the adaptive BICM benchmarker in the context of System I, while the adaptive BICM- ID scheme performed marginally worse, than adaptive TTCM ... conditions allow. Based on these findings, adaptive- rate channel coding is an interesting area for future research in conjunction with adaptive OFDM, adaptive beam-stearing and interference can- ... to the 10% uncoded target BER for the coded BER- and PE -adaptive schemes. The coded PE- adaptive modem outperformed the target-BER adaptive scheme, thanks to its more accurate control of the...

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Tài liệu Adaptive thu phát không dây P6 pdf

... BEP PaUg of our adaptive modulation scheme 6.3. SYSTEM DESCRIPTION 201 can be represented as the sum of the BEPs of the specific constituent modes divided by the average adaptive modem throughput ... mode-specific average BEP given in (6.20) and B is the average adaptive modem throughput given in (6.15) or in (6.18). The aim of our adaptive system is to transmit as high a number of bits per ... function of the target BEP and illustrate the operation of the adaptive modulation scheme. The corresponding performance results of the adaptive modulation schemes communicating over a flat-fading...

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