Receiver and reception method
A technology for receivers and receiving signals, applied in modulation carrier systems, transmission systems, electrical components, etc., can solve problems such as performance degradation, and achieve the effect of reducing the amount of calculation
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no. 1 example
In this embodiment, a radio receiver capable of achieving good performance even in the presence of ISI and ICI due to delayed waves exceeding the guard interval and inter-symbol interference due to frequency selectivity of propagation paths will be described.
[0032]
figure 1 It is a schematic block diagram showing the configuration of a wireless transmitter that transmits signals to the wireless receiver according to the first embodiment of the present invention. This wireless transmitter includes: S / P (Serial / Parallel: serial / parallel) conversion part 1, each symbol signal processing part 2-1~2-4, DTCH (Data Traffic Channel: data traffic channel) multiplexing A user unit 8 , a PICH (Pilot Channel: Pilot Channel) multiplexing unit 9 , a scrambling (scrambling) unit 10 , an IFFT (Inverse Fast Fourier Transform: Inverse Fast Fourier Transform) unit 11 , and a GI insertion unit 12 . Each symbol signal processing section 2-1 to 2-4 includes: an error correction coding section...
no. 2 example
In this embodiment, a case where clustering is performed based on the starting point of each delay complex to form a block will be described.
[0133]
The structure of the transmitter and the receiver in this embodiment are substantially the same as those in the first embodiment. The difference from the first embodiment is that, Figure 4 Part of the processing performed by the block division setting unit 79 in the illustrated MAP detection unit 23 is different.
[0134]
In the first embodiment, in the block division setting unit 79, clustering is performed based on the starting point and the ending point of each delay complex. In this embodiment, clustering is performed based on the starting point of each delay complex. For example, in Figure 9 (a) In the case of the arrival of such 3 delayed wave groups, based on Figure 9 (b) The origins of the delayed wave groups identified in this way are grouped sequentially, such as Figure 9 (c) The designated time zone is set...
no. 3 example
In this embodiment, a case will be described in which the electric power and the like of a certain cluster are lower than those of other clusters.
[0137]
The structure of the transmitter and the receiver in this embodiment are substantially the same as those in the first embodiment. The difference from the first embodiment is that in the case where the electric power etc. of a certain cluster is smaller than that of other clusters, Figure 4 Part of the processing performed by the block division setting unit 79 in the illustrated MAP detection unit 23 is different.
[0138]
Figure 10 (a) shows the case where the reception power of the second delay complex among the three incoming delay complexes is smaller than that of the other delay complexes. At this time, through the same processing as that of the first embodiment, the start and end points of the delayed complex are selected, such as Figure 10 As shown in (b), clustering is performed to obtain three clusters.
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