rayleigh
RSS rayleighPerformance and Implementation of Dynamic Frequency Hopping in Limited-Bandwidth Cellular Systems
White Paper Sensitivity to occupancy, Rayleigh fading assumptions, number of carriers, voice activity, and measurement errors are studied. This paper evaluates the performance of recently proposed Dynamic Frequency Hopping (DFH) when applied to cellular... [10 Jul 2008]
Performance Analysis of Linear Multisensor Multiuser Receivers for CDMA in Fading Channels
White Paper Bit-Error Probability (BEP) analysis for linear multiuser receivers with multiple sensors in frequency selective Rayleigh fading channels is presented. The analysis is applied to evaluate the BEP in antenna diversity reception and in a cellular... [03 Jul 2008]
Frequency-Hopping Versus Interference Cancellation for TD-CDMA
White Paper Slow Frequency-Hopping (SFH) with Frequency Overlap (FO) between adjacent carriers and interference cancellation are also included in the analysis, which considers the multipath Rayleigh fading channel (which models indoor and outdoor vehicular... [03 Jul 2008]
On Implementation of Bit-Loading Algorithms for OFDM Systems With Multiple-Input Multiple-Output
White Paper Using simulation technique the relationship between the eigenvalue (gain of eigen channel) distribution and number (finite) of total antennas under the conditions of fixed M/N or fixed number of receive antennas in Rayleigh fading channel... [03 Jul 2008]
Optimal Space-Frequency Group Codes for MIMO-OFDM System
White Paper A rather general channel model is assumed, where the channel is frequency-selective Rayleigh fading with arbitrary power-delay profile. Space-Frequency (SF) group codes are designed for Multiple-Input Multiple-Output Orthogonal Frequency Division... [03 Jul 2008]
Scalable Video Transmission Over Orthogonal Frequency Division Multiplexing Wireless Channels
White Paper A frequency-selective Rayleigh fading channel is assumed. In this paper a wireless system for video transmission over Orthogonal Frequency Division Multiplexing (OFDM) systems is optimized. Block transmissions using a cyclic prefix are used to... [03 Jul 2008]
Spread OFDM Performance With MMSE Equalization
White Paper All the calculus are performed in presence of a frequency-selective Rayleigh fading channel both in a coded (convolutive Forward Error Correcting scheme) and uncoded scenario. In this paper, upper bounds on the bit error probability of an OFDM/CDMA... [03 Jul 2008]
Reduced-Complexity OFDM-CPM Receivers
White Paper The performances of these receivers are evaluated over multipath Rayleigh fading channels for several subclasses of OFDM-CPM signals and it is shown that MBR gives the best error performance but is computationally more demanding than SAR and DDR. [03 Jul 2008]
A New CDMA/SDMA Structure With Transmit Diversity
White Paper An analysis of the system performance is given for a Rayleigh fading channel. Space division multiple access (SDMA) is a technique, which can be used to increase the capacity of mobile communication systems by exploiting the spatial separation... [03 Jul 2008]
Combined Impact of Double-Rayleigh Backscatter and Amplified Spontaneous Emission on Receiver Noise
White Paper Closed-form expressions for beat noises reveal that the relative magnitude of double - Rayleigh backscatter noise with respect to amplified spontaneous emission noise decreases as pulses are shortened and increases when optical and electrical ... [03 Jul 2008]
Linearly Precoded or Coded OFDM Against Wireless Channel Fades?
White Paper This paper identifies the maximum achievable diversity order for i.i.d.or correlated Rayleigh fading channels and also provide design rules for achieving maximum diversity gains with LP-OFDM. Orthogonal Frequency Division Multiplexing (OFDM... [10 Apr 2008]
Error Probability Minimizing Pilots for OFDM With M-PSK Modulation Over Rayleigh-Fading Channels
White Paper This paper analyzes the symbol error rate (SER) performance of OFDM with M-ary Phase-Shift Keying (M-PSK) modulation over Rayleigh-fading channels, in the presence of channel estimation errors. Orthogonal frequency division multiplexing (OFDM) with... [10 Apr 2008]
OFDM or Single-Carrier Block Transmissions?
White Paper It further compares the performance and complexity of uncoded and coded transmissions over random dispersive channels, including Rayleigh fading channels, as well as practical HIPERLAN/2 indoor and outdoor channels. [10 Apr 2008]
Space-Time-Frequency Coded OFDM Over Frequency-Selective Fading Channels
White Paper This paper proposes novel space-time-frequency (STF) coding for multiantenna orthogonal frequency-division multiplexing (OFDM) transmissions over frequency-selective Rayleigh fading channels. The major driver for broadband wireless communications... [10 Apr 2008]
Detrimental Effects of Filtering in an OFDM System Using Pilot Based Channel Estimation
White Paper The effects of performing channel estimation in AWGN and Rayleigh channels using non-ideal interpolating and decimating filters on an OFDM system are investigated. By using an improved Gaussian approximation for the Rayleigh fading channel for... [18 Apr 2007]
