A radio receiving system includes an orthogonally-modulated waveform detection/channel filter section 4, an I signal root Nyquist filter 20, a Q signal root Nyquist filter 21, and a signal detection/demodulation section 25. The orthogonally-modulated waveform detection/channel filter section 4 further includes a first filter (a band pass filter) 2 which permits passage of only a signal at a frequency band assigned to a communications system from which the radio receiving system receives a signal; a sample-and-hold circuit 5; a Hilbert transformer 6; a first channel filter 7 through N-th channel filter 9; and a clock signal shaping/controlling section 15. The band pass filter 2 is provided with the characteristics which cancel the aperture effect due to a sampling operation, thus compensating for the aperture effect due to a sampling operation.

_ uno radio receiving sistema incluir uno orthogonally-modular forma de onda detection/channel filtro sección 4, uno yo señal raíz Nyquist filtro 20, uno q señal raíz Nyquist filtro 21, y uno señal detection/demodulation sección 25. _ orthogonally-modular forma de onda detection/channel filtro sección 4 más lejos incluir uno primero filtro (uno venda pasar filtro) 2 que permitir paso solamente uno señal en uno frecuencia venda asignar uno comunicación sistema que radio receiving sistema recibir uno señal; _ uno muestra-y-sostener circuito 5; _ uno Hilbert transformador 6; _ uno primero canal filtro 7 por n-th canal filtro 9; _ y uno reloj señal shaping/controlling sección 15. _ venda pasar filtro 2 ser proporcionar con característica que cancelar abertura efecto debido uno muestreo operación, así compensating para abertura efecto debido uno muestreo operación. _