bit rate 1 Mbit/s Data bit rate 2 Mbit/s Packet size 8192 bit Number of minislots 10 15 - Transmission Power 100 mW Decoding sensitivity -81 dBm Carrier sensing sensitivity -91 dBm Carrier frequency 2 GHz Bandwidth 22 MHz Path loss exponent 3 Modulation scheme data QPSK Modulationtion scheme control signals BPSK .
Recall that the IEEE 802.15.6 standard specifies the use of BCH (63,51,2) code and the use of DBPSK, DQPSK, and D8PSK modulation schemes for data transmission at different rates in the NB PHY [5].
Moreover, we check if link distance and so modulation scheme and data rate are also decisive features of such impact.
Depending on the modulation scheme, a data rate of 250 kbps at 2.4 GHz, from 20 to 250 kbps at 868 MHz, and from 40 to 250 kbps at 915 MHz can be supported.
Digital radio communications uses nowadays different modulation schemes with high data rate possibilities.
It should also be noted that, for the presented noncoherent scheme, high-order modulation schemes with high-data rate may become valid as the phase information has been totally lost.
The rate is a function of the total transmit power of DL MU-MIMO transmission with three data modulation schemes.
‖·‖2 is the Euclidean norm operator and h 2 2 = ∑ i = 1 N h i 2. System performance is evaluated in terms of BER which adopts different data modulation schemes.
It discusses topics, such as the basics of wireless communications, modulation schemes used in digital data transmission, basics of wireless local area networks, the IEEE 802.11, the workings of digital radios, radio signal transmission and reception by means of antennas, problems related to radio signal transmission and methods to overcome them, and outdoor microwave links.
Specifically, its major innovation resides in the optional utilization of two new Differential Phase Shift Keying (DPSK -based moDPSK -basedhemodulationble a faschemesto transfenableough the so-called Enhanced Data Rates (EDR).
