Cdma transmission model, Electrical Engineering

Assignment Help:

The RAKE receiver exploits multipath channel characteristics and scrambling codes with good cross-correlation properties to realize a maximum ratio diversity combiner. Multipath propagation and the resulting channel impulse response) 

1866_CDMA transmission model.png

280_CDMA transmission model1.png

Fig. 2 shows a typical baseband multipath channel transmission model for DS-CDMA on the uplink. The binary user and control data at the rate of R bits/s taking on values ±1 are multiplied by orthogonal channelization (OVSF) codes at the rate of SF×R chips/s where SF is the spreading factor. The spread user and control signals are I/Q-code multiplexed and then multiplied by a complex scrambling code which enables separation of separate mobile users at Node B. The scrambled signal  goes through  the multipath channel. The output of the multipath channel is distorted by additive white Gaussian noise (AWGN)  and multiuser interference.


Related Discussions:- Cdma transmission model

When both mt2 and gate are positive, When both  MT 2 and  Gate  are pos...

When both  MT 2 and  Gate  are positive In this  junction  P 1 N 1   and P 2 N 2   are forward  biased whereas junction N 1 P 2 is reverse biased. The gate current flows  thr

Determine about the satellite navigation, Determine about the satellite nav...

Determine about the satellite navigation In motor vehicles system is known as satellite navigation (sat nav). On board computer contains pre-stored road maps. Vehicle's exact

Energy stored in the capacitor when it is fully charged, An 12µF capacitor ...

An 12µF capacitor is connected in series to a 0.5M? resistor across the dc voltage supply of 240V. verify: (a)  Time constant (b)  Initial charging current (c)  Time fo

Sketch voltage and the energy stored in the capacitor, Q. Considering the c...

Q. Considering the circuit shown in Figure, sketch v(t) and the energy stored in the capacitor as a function of time.

Extended industry standard architecture, How is EISA bus different from ISA...

How is EISA bus different from ISA bus? The Extended Industry Standard Architecture (EISA): it is a 32 bit modification to the ISA bus. Since computers became larger and had wi

The basic operation of battery, The basic operation of battery  A simpl...

The basic operation of battery  A simple cell comprises two dissimilar conductors (electrodes) in an electrolyte. Such a cell comprises copper and zinc electrodes. An electric

Explain the discrete time systems, Explain the Discrete Time Systems? A...

Explain the Discrete Time Systems? A system operates on an input signal, x[n] and output the results, y[n]. For example, a digital filter (a system) can be represented by the f

Communication, what do you mean by band in communication? how it differs fr...

what do you mean by band in communication? how it differs from bandwidth?

Define explicit - implicit and parametric representations, Give an industri...

Give an industrial look at modern CAM/CAD. Define explicit, implicit and parametric representations. What are the basic advantages of parametric representations over the impli

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd