Frame synchronization detection apparatus and receiving apparatus

[0037] figure 1 It is a diagram schematically showing a configuration example of the receiving device 1 according to Embodiment 1 of the present invention. like figure 1 As shown, the receiving device 1 has a receiving antenna element Rx, an analog signal processing unit 11, an A / D converter (ADC) 12, a quadrature demodulation unit 13, a local oscillator 14, an SRRC (Squared-Root Raised Cosine, square root Raised cosine) filter 15, PN removal unit 16, equalization processing unit 17, frame body processing unit 21, channel response estimation unit 22, local PN sequence generation unit 24, multiplier 25, and a frame functioning as a frame synchronization detection device Synchronization detection unit 26 .

[0038] The analog signal processing unit 11 receives wireless signals through the receiving antenna element Rx. The analog signal processing unit 11 performs signal amplitude adjustment, frequency conversion, and band limitation on the wireless signal, and supplies an ana...

[0074] Next, Embodiment 2 of the present invention will be described. Figure 12 It is a functional block diagram schematically showing the configuration of the frame synchronization detection unit 26B according to the second embodiment. In addition to substitute figure 1 shows the frame sync detection section 26 which has Figure 12 Except for the frame synchronization detection unit 26B, the structure of the reception device of this embodiment is similar to figure 1 The illustrated receiving device 1 has the same structure.

[0075] like Figure 12 As shown, the frame synchronization detection unit 26B includes the first delay unit 31 , the autocorrelation calculation unit 33 , and the frame number detection unit 35 similarly to the frame synchronization detection unit 26 of the first embodiment. The frame synchronization detection unit 26B of the present embodiment further includes a signal delay unit 36 ​​, a signal synthesis unit 30 , and a frame timing detection unit...

[0095] Next, Embodiment 3 of the present invention will be described. Figure 14 It is a functional block diagram schematically showing the configuration of the frame synchronization detection unit 26C according to the third embodiment. In addition to substitute figure 1 shows the frame sync detection section 26 which has Figure 14 Except for the frame synchronization detection unit 26C, the structure of the reception device of this embodiment is similar to that of figure 1 The illustrated receiving device 1 has the same structure.

[0096] like Figure 14 As shown, the frame synchronization detection unit 26C includes the first delay unit 31 , the autocorrelation calculation unit 33 , the second delay unit 32 , and the frame timing detection unit 34 similarly to the frame synchronization detection unit 26 of the first embodiment. The frame synchronization detection unit 26C of the present embodiment further includes a sub delay unit 38 , a sub autocorrelation calculation...