0
Two main reasons:
1) The frequent phase inversions induced by a simple PRN waveform allow the receiver to calculate precise ranging. BSPK also easily facilitates the use of the Gold Code in PRN sequencing, allowing the SVs to broadcast on the same frequency, yet still be individually identified.
2) Secondly, because the signal has a normalized and smaller waveform, the signal is degraded less by narrowband interference.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What are the three modulation techniques used for digital television transmission?
Three different modulating techniques are emploed to provide digital television (i.e. satellite, cable, UHF ) and these are known as DQPSK, QAM and COFDM. Each technique is a variation of phase modulation. QAM also takes advantage of amplitude as well as phase changes.
Amplitude modulation compared to Pulse position modulation'?
Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the strength of the transmitted signal in relation to the information being sent. For example, changes in the signal strength can be used to reflect the sounds to be reproduced by a speaker, or to specify the light intensity of television pixels. (Contrast this with frequency modulation, also commonly used for sound transmissions, in which the frequency is varied; and phase modulation, often used in remote controls, in which the phase is varied) In the mid-1870s, a form of amplitude modulation-initially called "undulatory currents"-was the first method to successfully produce quality audio over telephone lines. Beginning with Reginald Fessenden's audio demonstrations in 1906, it was also the original method used for audio radio transmissions, and remains in use today by many forms of communication-"AM" is often used to refer to the mediumwave broadcast band (see AM radio). Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2M possible time-shifts. This is repeated every T seconds, such that the transmitted bit rate is M/T bits per second. It is primarily useful for optical communications systems, where there tends to be little or no multipath interference.
Which literary technique is used in the secretary handed the judge the original documents?
An oxymoron is the literary technique that is used.
What is rotoscoping used for in animation?
Rotoscoping is an animation technique. It is the technique of manually creating a matte for an element on a live-action plate so it may be composited over another background.
Which tattooing technique has been used for thousands of years in India?
That tattooing technique that has been used for thousands of years in India is referred to as henna tattoos.
Why BPSK system is implemented in spartan 3e FPGA kit?
BPSK is a modulation technique. It is used to modulate and demodulate the required signal. It can be virtually implemented in MATLAB. But to understand its physical behaviour, it needs to be implemented on FPGA board.
What modulation technique used in tv broadcasting?
AM and FM
What is the modulation technique used in microwave sdh?
Qam only
What is the modulation technique used in pdh as nec equipment?
QPSK
Which modulation technique is the mos fundametal modulation technique used in telecommunications?
If we discount on/off switching af a carrier (c.w.), for instance as used for the transmission of Morse, then it must be m.c.w. in which an a.m. carrier is keyed on and off.
What is the difference between BPSK and DPSK?
BPSK=> 1.The BPSK stands for “Binary Phase-shift keying”. 2.DPSK is a not a method of BPSK, where there is no reference phase signal. 3.amplitude shift keying 4.lesser bandwidth more probability error DPSK=> 1.The DPSK stands for “Differential phase-shift keying”. 2.DPSK is a method of BPSK, where there is no reference phase signal. 3.It is one type of phase modulation used to transmit data by altering the carrier wave’s phase. 4.greater bandwidth probability error less
What is adaptive modulation?
Adaptive delta modulation is a analog-to-digital and digital-to-analog conversion technique which is primarily used for voice transmission data and can be used for multiple purposes.
What is delta modulation?
Adaptive delta modulation is a analog-to-digital and digital-to-analog conversion technique which is primarily used for voice transmission data and can be used for multiple purposes.
What Technique is used 2 transmit audio signals of television?
what is the modulation used in telivision for audio signals
What is Adaptive delta modulation?
Adaptive delta modulation is a analog-to-digital and digital-to-analog conversion technique which is primarily used for voice transmission data and can be used for multiple purposes.
Which modulation technique is used in gsm?
GSM uses GMSK modulation scheme. GPRS also uses GMSK modulation scheme. EDGE and UMTS uses 8-PSK.
What is the modulation technique used in microwave pdh as nec equipment?
QAM... (16 QAM, 256 QAM) according to capacity
