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The simplest Phase Shift Keying (PSK) technique is Binary Phase Shift Keying (BPSK). BPSK is a digital modulation scheme that uses two different phase shifts of the carrier signal to represent binary data. Let’s delve into the details of BPSK, highlighting its simplicity and key characteristics: 1. Basic Principles of BPSK: Binary Representation: BPSK is … Read more
Quadrature Phase Shift Keying (QPSK) is a digital modulation scheme used in communication systems to transmit data by varying the phase of the carrier signal. Let’s explore the modulation of QPSK in detail: 1. Phase Shift Keying (PSK) Basics: Binary Representation: PSK is a type of digital modulation where the phase of the carrier signal … Read more
Binary Phase Shift Keying (BPSK) is a digital modulation scheme that modulates the phase of a carrier signal to represent binary data. In BPSK, there are two possible phase shifts that correspond to the two binary symbols (0 and 1). Let’s explore the phase shift of BPSK in detail: 1. BPSK Modulation Basics: Binary Representation: … Read more
Gaussian Minimum Shift Keying (GMSK) and Quadrature Phase Shift Keying (QPSK) are both digital modulation techniques used in communication systems to transmit data by varying the phase of the carrier signal. The key difference between them lies in the modulation scheme and the characteristics of the modulated signals. Let’s explore the differences between GMSK and … Read more
What is the Difference Between Offset QPSK and PI/4 QPSK? Quadrature Phase Shift Keying (QPSK) is one of the most widely used modulation schemes in digital communication systems, including in technologies like LTE (Long Term Evolution) and satellite communication. It allows the transmission of two bits per symbol by varying the phase of the carrier … Read more
What is the Difference Between PSK and QPSK? PSK (Phase Shift Keying) is a broad category of digital modulation techniques in which the phase of a carrier signal is modified to represent data. QPSK (Quadrature Phase Shift Keying) is a specific type of PSK that uses four distinct phase shifts to encode digital information. The … Read more
Quadrature Phase Shift Keying (QPSK) and 4-QAM (Quadrature Amplitude Modulation) are both digital modulation techniques used in communication systems, but they differ in their modulation schemes and the way they represent information. Let’s delve into the details of the differences between QPSK and 4-QAM: 1. QPSK (Quadrature Phase Shift Keying): Phase Shifts: QPSK uses four … Read more
Code Division Multiple Access (CDMA) is a digital cellular technology that allows multiple users to share the same frequency band simultaneously. It is a multiple access technique that enables the transmission of multiple signals over the same frequency spectrum by assigning a unique code to each user. CDMA is widely used in mobile communication systems, … Read more
What is Orthogonal Code in CDMA? In Code Division Multiple Access (CDMA) systems, multiple users share the same frequency band simultaneously. To prevent interference and ensure that the signals from different users do not overlap destructively, each user’s data is encoded using a unique spreading code. These spreading codes play a critical role in distinguishing … Read more
What is TD-SCDMA Network Mode? TD-SCDMA stands for Time Division Synchronous Code Division Multiple Access. It is a 3G mobile telecommunications standard developed primarily in China as an alternative to other 3G technologies such as WCDMA and CDMA2000. Unlike other modes, TD-SCDMA uses a combination of Time Division Multiple Access (TDMA) and Code Division Multiple … Read more