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[PDF] Top 20 A modified code tracking loop for direct-sequence spread-spectrum systems on frequency-selective fading channels

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A modified code tracking loop for direct-sequence spread-spectrum systems on frequency-selective fading channels

A modified code tracking loop for direct-sequence spread-spectrum systems on frequency-selective fading channels

... Because the data-modulated channel es- timator can cope with the time-varying Rayleigh fading effect and the data modulation effect on the error signals, in addition [r] ... See full document

5

Performance Analysis of a Complex Multicode Tracking Loop in Bandlimited Rayleigh Fading Channels

Performance Analysis of a Complex Multicode Tracking Loop in Bandlimited Rayleigh Fading Channels

... root-mean-squared tracking error performance analysis of a class of coherent digital delay-locked loops for multicode direct sequence spread spec- trum signals in bandlimited ... See full document

18

Performance analysis of noncoherent digital delay locked loops for direct sequence spread spectrum systems with Doppler shift and quantized adaptation

Performance analysis of noncoherent digital delay locked loops for direct sequence spread spectrum systems with Doppler shift and quantized adaptation

... Digital code tracking becomes very popular because of the evolution toward all digital modem implementation of DSSS ...analysis for the noncoherent second-order digital code tracking ... See full document

11

A new analysis of direct-sequence pseudonoise code acquisition on Rayleigh fading channels

A new analysis of direct-sequence pseudonoise code acquisition on Rayleigh fading channels

... the code phase uncertainty 2 of an acquisition system is divided into cells, with a cell size to within the lock-in range of the code tracking loop used for fine code ... See full document

8

A Differentially Coherent Delay-Locked Loop for Spread Spectrum Tracking Receivers

A Differentially Coherent Delay-Locked Loop for Spread Spectrum Tracking Receivers

... delay-locked loop, direct sequence spread spectrum, tracking error ...present a code tracking receiver with less complexity, by employing a ... See full document

3

Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency selective fading channels

Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency selective fading channels

... The channel transfer function of pilot tones are estimated by using low-rank MMSE estimator, and the channel transfer function of data tones are in- terpolated by piecewise l[r] ... See full document

9

Co-Channel Interference Suppression for Coded OFDM Systems over Frequency Selective Fading Channels

Co-Channel Interference Suppression for Coded OFDM Systems over Frequency Selective Fading Channels

... II. A SSUMPTIONS AND S IGNAL M ODELS A. Assumptions We consider a scenario where one OFDM desired signal with a single input/single output channel and one cyclo- stationary interference with ... See full document

5

COMPUTER-SIMULATION OF A DIRECT SEQUENCE SPREAD SPECTRUM CELLULAR RADIO ARCHITECTURE

COMPUTER-SIMULATION OF A DIRECT SEQUENCE SPREAD SPECTRUM CELLULAR RADIO ARCHITECTURE

... Here we consider a spread spectrum cellular radio architec- ture in which the whole service area is divided into cells and each cell is served by a base. A mobile [r] ... See full document

7

A spread spectrum DS/CDMA channel fading simulation environment for mobile radio network systems

A spread spectrum DS/CDMA channel fading simulation environment for mobile radio network systems

... less systems become increasingly important as personal com- munications and wireless data services ...evolve. A basic under- standing of the channel is important not only for designing modulation and ... See full document

6

A Robust Frequency Tracking Loop for Energy-Efficient Crystalless WBAN Systems

A Robust Frequency Tracking Loop for Energy-Efficient Crystalless WBAN Systems

... presents a frequency tracking loop (FTL) to realize a crystalless wireless sensor node (WSN) for wireless body area network ...By tracking a remote wireless RF ... See full document

5

Efficient pseudonoise code design for spread spectrum wireless communication systems

Efficient pseudonoise code design for spread spectrum wireless communication systems

... PN code generator generates the PN code. Despreader is used for despreading procedure and the decision circuit detects the ...different code lengths. That is to say, this is a ... See full document

8

Frequency-domain orthogonal multiuser communications over frequency-selective slowly fading channels

Frequency-domain orthogonal multiuser communications over frequency-selective slowly fading channels

... Abstract-Inheriting the properties of the frequeucy-domaiu approach 111 to avoid MA1 in the asynchronous multiuser com- munications and sharing the rationale behind OFDM sys[r] ... See full document

5

A blind joint estimator for multipath diversity and PN timing error in direct-sequence spread-spectrum receivers

A blind joint estimator for multipath diversity and PN timing error in direct-sequence spread-spectrum receivers

... The residual inter-chip interference (ICI) after the modified KMA proposed here, the timing er- ror signals, mean square timing error and mean time to lose lock (MTLL) fo[r] ... See full document

4

Optimal Binary Training Sequence Design for Multiple-Antenna Systems Over Dispersive Fading Channels

Optimal Binary Training Sequence Design for Multiple-Antenna Systems Over Dispersive Fading Channels

... important for multiple-antenna sys- tems especially when the number of antennas ...sequences for each transmitting antenna in turn [1]. For a system with M antennas, this scheme requires M ... See full document

6

Low-power adaptive pseudo noise code acquisition for spread-spectrum systems

Low-power adaptive pseudo noise code acquisition for spread-spectrum systems

... values. For the power management module, the functional blocks of noise estimator, sampling rate generator, and threshold gener- ator are included in this ...refresh frequency depends on the co- ... See full document

13

Spread spectrum multiple-access with DPSK modulation and diversity for image transmission over indoor radio multipath fading channels

Spread spectrum multiple-access with DPSK modulation and diversity for image transmission over indoor radio multipath fading channels

... these subbands at the same time in the same channel, the SS-CDMA multiplexing scheme is particularly well suited to subband coding that divides the image informa[r] ... See full document

15

BER-minimized space-time-frequency codes for MIMO highly frequency-selective block-fading channels

BER-minimized space-time-frequency codes for MIMO highly frequency-selective block-fading channels

... codes for the MIMO highly frequency-selective block-fading chan- nels can be discussed in three ...CM4. For different channels, we have to design different codes to reflect the ... See full document

5

A low-complexity frame synchronization and frequency offset compensation scheme for OFDM systems over fading channels

A low-complexity frame synchronization and frequency offset compensation scheme for OFDM systems over fading channels

... Residual Frequency Tracking Error In the acquisition stage, we assume that the residual fre- quency error after the frequency tracking stage is an integral multiple of the subcarrier ...exists ... See full document

14

The Investigation of System Performance for OFDM Systems Operating in Frequency Non-Selective Fading Channels 鄭奇泓、陳雍宗

The Investigation of System Performance for OFDM Systems Operating in Frequency Non-Selective Fading Channels 鄭奇泓、陳雍宗

... (orthogonal frequency division multiplexing) signaling is one kind of "Multi-Carrier" technology, which can slow down delayed transmission especially for operating at frequency non-selective ... See full document

2

An accurate method for approximating the interference statistics of DS/CDMA cellular systems with power control over frequency-selective fading channels

An accurate method for approximating the interference statistics of DS/CDMA cellular systems with power control over frequency-selective fading channels

... cellular systems. This method considers the effects of frequency-selective multipath fad- ing; it also assumes perfect power control and a rectangular/sinc chip ... See full document

3

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