Ultra-wideband non-coherent system average bit error rate estimating method under S-V modified model fading channel of IEEE802.15.3a

Abstract

The invention provides an evaluation method of the average bit error rate for an ultra wideband incoherent system under an S-V modified model fading channel of IEEE 802.15.3a, including the following steps: S1: the expression of average values of channel energy and variance for a given channel model and a parameter is solved; S2: the channel energy is fitted into a logarithmic normal distributionmodel; S3: the result of fitted model is compared with an actually generated channel parameter; S4: the conditional bit error rate when the signal is under the condition of an additive white Gaussiannoise channel is solved; S5: a set of random numbers subject to logarithmic normal distribution are randomly generated according to the parameters of the average values and the variances, and the generated random numbers are used for substituting the energy per bit in the expression of bit error rate, thus obtaining a set of bit error rate values; and S6: the average bit error rate is solved according to the set of bit error rate values.

Description

technical field [0001] The invention relates to the field of wireless ultra-wideband communication receivers, in particular to an evaluation method for the average bit error rate of an ultra-wideband non-coherent system under the fading channel of the S-V correction model of IEEE 802.15.3a. Background technique [0002] Due to its advantages of small size, low power, and low cost, pulsed UWB technology has attracted widespread attention in low-speed communications, such as sensor networks, target positioning, and identification systems. The low-complexity receiver design is the key issue for the wide application and development of UWB technology. At present, researches on UWB receivers mainly focus on three schemes: coherent-based RAKE receivers and non-coherent-based TR receivers and ED receivers. The performance of the RAKE receiver is better than the other two through the coherent diversity reception of the multipath energy of the ultra-wideband signal, but for the syste...

AI Technical Summary

Problems solved by technology

[0003] The average bit error rate is a commonly used performance index for evaluating receivers in wireless fading channels. However, there are few in-depth studies on this performance index for ultra-wideband receivers, mainly due to the complex characteristics of ultra-wideband dense multipath channels. Paths appear in clusters, and the receiver needs to process many random variables at the same time because of energy collection, so it is difficult to accurately analyze the above two performance indicators of the receiver in a fading channel

Some existing studies have analyzed the performance of RAKE receivers, but the mathematical calculations are complex, and the calculation process requires the use of numerical integration methods to approximate the results

No studies have analyzed the performance of non-coherent UWB receivers in this aspect

Images