multiple systems multiuser
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Transmitter-Based Multiuser Interference Rejection for the Down-Link of a Wireless CDMA System in a Multipath Environment
White Paper MultiUser Interference (MUI) and multipath effects observed by the receiver are anticipated and suppressed at the transmitter; channel equalization and multiuser detection are therefore not required. In wireless Code Division Multiple Access (CDMA... [03 Jul 2008]
Performance of CDMA Random Access Systems With Packet Combining in Fading Channels
White Paper From the analysis results, it is observed that multiuser detection and packet combining substantially improve the system performance. This paper analyzes the system performance of code-division multiple-access (CDMA) random access systems with... [03 Jul 2008]
Blind Carrier Frequency Offset Estimation in SISO, MIMO and Multiuser OFDM Systems
White Paper This paper shows that this approach can be applied to blind CFO estimation in multi-input-multi-output (MIMO), and multiuser OFDM systems. The issues of channel nulls, multiuser interference and effects of multiple antennas are addressed... [03 Jul 2008]
Contention-TDMA Protocol: Performance Evaluation
White Paper In this paper, a hybrid access protocol known as contention time-division multiple access (C-TDMA) is presented and analyzed in a radio cellular multiuser system scenario. It has been recommended to be used in the uplink of future European... [03 Jul 2008]
Wavelet-Based Separating Kernels for Array Processing of Cellular DS/CDMA Signals in Fast Fading
White Paper We apply this representation to the development of a practical multiscale filter that achieves multiuser separation minimizing a time-averaged squared error. Multi-path compensation in CDMA systems is a problem of significant complexity especially... [03 Jul 2008]
Resource Pooling and Effective Bandwidths in CDMA Networks With Multiuser Receivers and Spatial Diversity
White Paper Much of the performance analysis on multiuser receivers for direct-sequence code division multiple-access (CDMA) systems is focused on worst case near-far scenarios. The user capacity of power-controlled networks with multiuser receivers are less... [10 Apr 2008]
Linear Parallel Interference Cancellation in Long-Code CDMA Multiuser Detection
White Paper Parallel interference cancellation (PIC) is a promising detection technique for code division multiple access (CDMA) systems. This paper introduces a method for finding an appropriate set of time invariant weights for systems using long codes. [10 Apr 2008]
Multiuser Detection and Channel Estimation in MIMO OFDM Systems Via Blind Source Separation
White Paper This paper proposes a blind multiuser detection and channel estimation method for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) systems based on Blind Source Separation (BSS). [18 Apr 2007]
A Scalable Multiuser Framework for Video Over OFDM Networks: Fairness and Efficiency
White Paper The framework explores the scalability of the video codec and multi-dimensional diversity of multiuser OFDM systems to achieve the optimal service objectives subject to constraints on delay and limited system resources. [13 Apr 2007]
Linear Precoding for Multiuser MIMO-OFDM Systems
White Paper This paper develops linear precoding schemes for the downlink in multiuser Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems with multiple data streams per user. [11 Apr 2007]
MaxWeight Scheduling for Multiuser OFDM
White Paper Multiuser OFDM is a promising multiple access technique that can be used to achieve higher data rates in the broadcast channel. This paper discusses Multiuser OFDM scheduling rules through the framework of queue stability. [11 Apr 2007]
Space-Time Interference Cancellation in MIMO-OFDM Systems
White Paper The framework is developed specifically for spatial multiplexing and is applied to multiuser MIMO-OFDM systems with asynchronism between users as well as to single-user MIMOOFDM systems. In this paper, a two stage hybrid interference cancellation... [11 Apr 2007]
A Unified Power Control Algorithm for Multiuser Detectors in Large Systems: Convergence and Performance
White Paper A unified approach to energy-efficient power control, applicable to a large family of receivers including the matched filter, the decorrelator, the (linear) Minimum-Mean-Square-Error detector (MMSE), and the individually and jointly optimal... [16 Jun 2006]
A Low-Complexity Enhancement to Suboptimal CDMA Receivers
White Paper However, most multiuser detectors suffer from their relatively complex implementations. The proposed post-detection error control method is shown to substantially improve the performance of the conventional detector, but has a much lower complexity... [16 Jun 2006]
Transmit Selection Diversity for Unitary Precoded Multiuser Spatial Multiplexing Systems With Linear Receivers
White Paper Multiuser spatial multiplexing is a downlink transmission technique that uses linear transmit pre-coding to multiplex multiple users and pre-cancel inter-user interference. In this paper, the downlink of a MultiUser Spatial Multiplexing (MUSM... [17 May 2006]
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