Understående bandwidth beregninger er essentielle for designering og analyse af kommunikationssystemer. Different modulering af ordninger kræver varying bandwidths to transmit data effektivt. Dette er vejledning giver praksis information om og beregning af bandwidth fo kommun modulatio n technokes.

Basic Concepts of Bandwidth and d Modulation

Bandwidth refers to the range of the frequenties use to transmit a signal. Modulation scheme encode data on to carriers, affect the bandwidth required. The choice o modulatio n impacts that effectively and d capacity of communicatio canal.

Bandwidth Beregninger for Commun Modulation Scheme

Differentieret modulering af teknikkerne har særlige former for beregning af beregningsmetoder.

  • (Amplitud Shift Keying (ASK)): Amplitud (ASU): Amplitud (ASU): Amplitud (ASU): Amplitud (ASU): Amplitud (ASU): Amplitud (ASU): Amplitud (ABS): Amplitud (ABS): Amplitud (ABS): Amplitg (ABS): Amplitent (ABS): Amplitent (ABS): ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: + ABS: +
  • (FSK): 1; FLT: 1; FLT: 3; Bandwidth Mea2 × (frequency deviation + data rate)
  • (PSK): (PSK): (PSK): (PSK): (PSK): (PSK): (PSK): (FFT): (FFT): (FFT): (PS3); Bandwidth (Bandwidth): (PSK): (PSK): (PSK): (PSK): (PSK): (PSK): (FLT): (PSp): (PSp: (PSp:); (PSp: (PSp:); (PSp: (Sp:); (Sp: (Sp:); Sp: (Sp:); Sp: (Sp:); Sp: (Sp: (Sp:); Sp: (Sp:); Sp: (Sp: (S); Sp: (S); Sp: (S); Sp: (S:); Sp: Sp: Sp: Sp: S@@
  • (QAM): (1); (1); (3); (3); (3); (3); (3); (3); (4); (4); (5); (5); (5); (5); (5); (5); (5); (5); (6); (6); (6); (6); (6); (6); (6); (7); (7); (7); (7); (7); (7); (7); (7); (7); (7); (7); (7); (7); 9); 9); 9); 9); 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9; 9;

Practical-undersøgelser

Fr a data rate of1 Mbps using BPSK (a form off PSK), denne bandwidth kræves det tilnærmelsesvis 1 MHz. Fr FSK with a deviation of2 MHz and the same data rate, denne bandwidth is about 6 MHz. Disse beregninger help in n selectin passende modulo n ordninger based on available able spectrum.