Study Electronics & Communication Engineering
1. CDMA (Code Division Multiple Access) is a direct-sequence spread spectrum (DSSS) based technique for multiplexing. 2. Principle: – CDMA assigns a unique code sequence to each user which is used to code data before transmission. – If a receiver knows the code sequence related to a user, it is able to decode the received […]
CDMA in Wireless Communication Read More »
According to this, the signals near to the receiver are received with less attenuation (high power) than signals far away and create interference to other users. 1. It occurs when two or more DSSS transmitters transmits the signal towards a DSSS receiver. Power of the spread-spectrum signals transmitter is the same at the antenna of
Near-far problem in CDMA Read More »
PICTORIAL REPRESENTATION: FDMA: TDMA: CDMA:
Comparison – FDMA, TDMA and CDMA Read More »
INTRODUCTION: 1. Bluetooth was originally envisioned in 1994 by Ericsson as a means of offering wireless links between mobile devices within a short distance. Later an association is formed in 1998 by several organisations called Bluetooth Special Interest Group (SIG). This association aimed to develop specifications, offering short-range connectivity within POS of a user. 2.
Bluetooth in Wireless Communication Read More »