RAKE reception has been considered as an effective way to anticipate multipath signal fading in direct sequence code division multiple access (DS-CDMA) communications systems. Common diversity techniques used in conventional fingered RAKE receivers are maximal-ratio combining (MRC) and equal-gain combining (EGC). Conventional fingered RAKE receivers offer increased complexity, since the number ...

Currently most of the terminals for UMTS-FDD implement a simple Rake receiver. This paper shows how the Rake, including despreading and descrambling, could be replaced by a least squares receiver that can be implemented on a Cordic based hardware architecture. The performance in conjunction with the computational requirements of the receiver is widely adjustable. Simulation results show that th...

Deployment of antenna arrays is a very promising solution to reduce the Multiple Access Interference (MAI) from high data rate users in the Wideband Code Division Multiple Access (W-CDMA) system. Combining the antenna array with a RAKE receiver, both of which exploits multipath diversity, can significantly improve the system performance. In this research, we investigate the performance of these...

It has been suggested that the distinctive capacity of some nonhuman primates to use tools may reflect a well-developed corticospinal system and, in particular, direct cortico-motoneuronal (CM) connections to hand muscles. We investigated the activity of corticospinal neurons in the primary motor cortex hand area during the use of a tool by two adult macaque monkeys. They used a light rake to r...

In all manufacturing processes, surface quality has a great significance beside dimensional and geometrical tolerances of the products. Performance and strength of machine parts are highly affected by the surface quality. In this research, the effect of the rake angle on surface quality for AISI 1040 steel in turning operations was investigated. For this purpose, eight different rake angles var...

In this paper, we investigate the impact of mistiming on the performance of Rake receivers in direct-sequence ultra-wideband (DS-UWB) systems from the perspective of the achievable information rate. A generalized expression for the performance degradation due to mistiming is derived. Monte Carlo simulations based on this expression are then conducted, which demonstrate that the performance loss...

The error rate link performance has been evaluated and compared for efficient Rake receiver structures in high data rate ultra-wide band (UWB) realistic channels. Exponential-Lognormal model for high data rate UWB indoor channels has been used for generating Power Delay Profiles (PDP). This model is based on extensive measurements in diversified Residential & Commercial environments. The PDPs f...

This paper demonstrates optimum receiver performance in terms of bit error rate (BER) for time hopping pulse position modulation (TH-PPM) ultra wideband (UWB) system in multiple user interference environment for indoor radio communication. Equal gain combining and selective gain combining have been demonstrated in terms of ideal RAKE (ARAKE), selective RAKE (SRAKE) and partial RAKE (PRAKE) rece...

An FPGA implementation of WCDMA-RAKE receiver architecture 1 2 Rakesh Kr. Jha, Mamta Sood Dept. BIST Bhopal, (M.P.) India EC Dept., TIT College, Bhopal, (M.P.) India This paper deals with the WCDMA Rake-receiver architecture for 3G communications. Third generation mobile communication is vastly advanced and emerging technology in the field of wireless communication. Third generation communicati...