matched cdma
Distributed Sample Acquisition-Based Fast Cell Search in Inter-Cell Asynchronous DS/CDMA Systems
White Paper The proposed DSA scheme enables the long-code acquisition extremely fast even without employing any passive matched filter which used to dominate synchronization circuit complexity in asynchronous DS/CDMA systems. [03 Jul 2008]
SINR Maximizing Space-Time Filtering for Asynchronous DS-CDMA
White Paper Using this framework, a Space-Time Noise Whitening Matched Filter (ST-NWMF) for DS-CDMA demodulation is introduced. Direct Sequence Code Division Multiple Access (DS-CDMA) is a core technology for wireless access that is proposed for future... [03 Jul 2008]
A Low-Power DS-CDMA RAKE Receiver Utilizing Resource Allocation Techniques
White Paper The front-end of the chip consists of a matched filter and an all digital timing and frequency recovery loop based on novel interpolation and direct digital frequency synthesis (DDFS) techniques. This paper presents architectural and implementation... [03 Jul 2008]
CDMA Matched Filter Implementation in Virtex Devices
White Paper This discrimination is accomplished by means of a matched filter, whose output indicates when a particular code sequence is detected in the input data stream. This paper includes a reference design (HDL code) for implementing parallel matched filters. [03 Jul 2008]
Capacity of Complexity-Constrained Noise-Free CDMA
White Paper According to this paradigm, detected bits, obtained by performing hard decisions directly on the channel's matched filter output, must be the same as the transmitted binary inputs. An interference-limited noise-free CDMA downlink channel operating... [16 Jun 2006]
On the Achievable Information Rates of CDMA Downlink With Trivial Receivers
White Paper According to this constraint, detected bits, obtained by performing hard decisions directly on the channel's matched filter output, must be the same as the transmitted binary inputs. A noisy CDMA downlink channel operating under a strict complexity... [16 Jun 2006]
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 Conventional matched-filter detectors for Code-Division Multiple-Access (CDMA) systems suffer from Multiple-Access Interference (MAI) caused by nonzero correlation between spreading codes at the receiver. [16 Jun 2006]
Randomly Spread CDMA: Asymptotics Via Statistical Physics
White Paper The generic detector can be particularized to the matched filter, decorrelator, linear minimum mean-square error (MMSE) detector, the jointly or the individually optimal detector, and others. This paper studies randomly spread code-division... [26 Jul 2005]
Closed Loop Transmit Diversity Enhancements for UMTS Narrow Band and Wide Band TD-CDMA
White Paper The impact of using multiple transmit antennas at the Node B on the different type of receivers, namely Joint Detection schemes and conventional Matched Filter, in several propagation environments, for a voice-like service (without channel coding... [19 Jul 2005]
Improving the Performance of Third Generation Wireless Communication Systems
White Paper For more efficient use of resources, one wishes to allow more users to transmit simultaneously, by using algorithms that utilize the structure of the CDMA system more effectively than the simple Matched Filter (MF) system used in the proposed 3G... [22 Mar 2005]
