Optical Code Division Multiple Access (OCDMA) systems enable simultaneous transmission of multiple data streams over a shared optical medium by assigning each user a unique code sequence. Rather than ...

APIC Corporation, Culver City, California, recently announced that it has received a U.S. Naval Air Systems Command Small Business Innovation Research Phase I contract to design an integrated optical ...

Access methods are multiplexing techniques that provide communications services to multiple users in a single-bandwidth wired or wireless medium. Communications channels, whether they’re wireless ...

In Interleave Division Multiple Access (IDMA), users are assigned with specific inter-leavers instead of PN-sequences as in case of Code Division Multiple Access (CDMA) systems to differentiate ...

TD-SCDMA is a 3G format of choice for the national standard of 3G mobile telecommunication in China. TD-SCDMA was chosen as an attempt to escape dependency on the already implemented Western spread ...

Wideband CDMA is a third-generation (3G) wireless standard which allows use of both voice and data and offers data speeds of up to 384 Kbps. The frequency bands for WCDMA are as follows: Europe and ...

This paper is the study of the QPSK (Quadrature Phase Shift keying) modulation technique using AWGN (Additive White Gaussian Noise) and Multipath Rayleigh fading channel. In QPSK scheme the authors ...

Unlike Verizon’s lineup of LTE Android smartphones, we just confirmed with the carrier that the new iPhone 5 would not support simultaneous voice and data over its LTE network. A Verizon spokesperson ...