Analysis and design of a frequency-hopped spread-spectrum transceiver for wireless personal communications

Analysis & Design of a Frequency - Hopped Spread - Spectrum Transceiver for Wireless

Personal Communications Services (PCS) require low-power radio technologies. One such transceiver architecture employing frequency-hopped spread spectrum techniques is described. Low power and robustness are two keys to a wireless personal communications device. A frequency-hopped code-division multiple access (CDMA) scheme is chosen over other multiple access methods because it provides an inh...

Design of a Frequency Hopping Spread Spectrum Transceiver for Cdma2000 Systems

This paper presents an integrated frequency hopped transceiver based on a subset of the cdma2000 network specifications. The circuit consists of a phase locked loop (PLL) that generates the hopping carriers, local oscillators (LOs) that generate GHz range carrier frequencies, and a series of mixers. It accepts input data in frequency shift keyed (FSK) format, and also outputs received data in F...

Direct conversion transceiver design in the 863-870-Mhz band Application: Wireless sensor network

Simulation results of a 863-870-MHz frequency-hopped spread-spectrum transceiver with binary frequency shift keying (BFSK) modulation at 20 kb/s for wireless sensor applications is presented. The various blocks parameters of the transmit/receive RF front end like noise figure (NF), gain, 1 dB compression point (P-1dB), and IIP3 are simulated and optimized to meet transceiver specifications. The...

Multiple-access capability of frequency-hopped spread-spectrum revisited: an analysis of the effect of unequal power levels

The Design and Implementation of a Semi-Custom Transmitter for a CDMA Direct Sequence Spread-Spectrum Transceiver

High-performance wireless communications systems allow access to real-time data located on a high-speed network using portable, lowpower terminals. For a pico-cellular network, a basestation within each cell serves as the interface between the backbone network and the various mobile units. A CDMA direct sequence spread-spectrum transmitter is presented which allows the basestation to provide a ...