Blind detection, uplink access method and device, receiver, transmitter, base station
An access method and technology to be sent, applied in the fields of transmitters, base stations, uplink access methods and devices, blind detection, and receivers, can solve problems such as performance degradation, performance deterioration, and blind detection performance degradation, and achieve good service demand, the effect of improving reliability
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Embodiment 2
[0132] In this embodiment, a blind detection device is also provided, which is used to implement the above embodiments and preferred implementation modes, and what has already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
[0133] image 3 is a structural block diagram of a blind detection device according to an embodiment of the present invention, such as image 3 As shown, the device includes:
[0134] The demodulation and decoding module 30 is configured to serially demodulate and decode the data of each user from the received symbols, wherein the process of serially demodulating and decoding the data of each user includes:
[0135] Use the K L-length seque...
Embodiment 3
[0166] At the transmitting end, the signal is modulated by BPSK, and then spread with a binary 4-length non-orthogonal spread sequence in the complex domain, and the information bits and data bits of the indicated spread sequence are coded and modulated together, and assuming that the overload rate is 300%, then There are 12 users. On the receiving side, without knowing the spread sequence information, the base station uses an efficient blind detection algorithm to detect the received signal, and then demodulates, decodes, and CRCs the data whose SINR reaches the predetermined demodulation threshold; reconstructs the CRC decoding When the data stream is correct, firstly, the CRC correct data stream is coded and modulated; then, the modulated data symbols are spread, and the spreading sequence used is the same as that of the transmitting end; finally, the re-spreading data symbols Through the channel again, the channel coefficient is obtained by using a better joint channel est...
Embodiment 4
[0235] At the transmitting end, the signal is modulated by QPSK, and then spread with a binary 4-length non-orthogonal spreading sequence in the complex domain, and this indicates that the information bits and data bits of the spreading sequence are coded and modulated together, and assuming that the overload rate is 300%, then There are 12 users. On the receiving side, without knowing the spread sequence information, the base station uses an efficient blind detection algorithm to detect the received signal, and then demodulates, decodes, and CRCs the data whose SINR reaches the predetermined demodulation threshold; reconstructs the CRC decoding When the data stream is correct, firstly, the CRC correct data stream is coded and modulated; then, the modulated data symbols are spread, and the spreading sequence used is the same as that of the transmitting end; finally, the re-spreading data symbols Through the channel again, the channel coefficient is obtained by using a better j...
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