Multistage parallel complex multiplication processing method and device
A technology of parallel processing and processing method, applied in network traffic/resource management, shaping network in transmitter/receiver, electrical components, etc., can solve the problems of long delay time, long processing delay, large buffer capacity, etc.
Active Publication Date: 2013-04-24
北京万海云科技有限公司
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Problems solved by technology
[0007] exist figure 1 In the scheme shown, each multiplication factor needs to be cached in parallel, that is, as many levels of multiplication factors are needed as many levels of parallel cache, and the consumed cache capacity is relatively large
In addition, multi-level complex multiplication factors perform complex multiplication operations in sequence. Taking two complex multiplications to consume 6 clock cycles as an example, the baseband data d_burst after modulation, spread spectrum, and complex scrambling code p (k) It takes 5×6=30 clock cycles to multiply with the following 5 multiplication factors in turn, that is, one carrier needs 30 clock cycles to process, and the processing delay is longer
[0008] To sum up, the existing multi-level parallel multiplication processing method has the disadvantages of long delay time and excessive buffer space consumption
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[0024] figure 2 It is a flow chart of a multi-stage parallel multiplication processing method according to an embodiment of the present invention. This method is suitable for the case where multi-channel parallel processing data needs to be multiplied by multi-level complex multiplication coefficients, such as figure 2 As shown, the method includes:
[0025] Step 201 , pre-multiplying multi-level multiplication coefficients corresponding to each path of parallel processing data to obtain total coefficients, and sending the total coefficients to a buffer for storage.
[0026] Step 202 , for each channel of parallel processing data received, perform multiple multiplication processing on the data and the corresponding total coefficients stored in the cache, and output result data.
[0027] figure 2 In the technical solution shown, since the total coefficients are pre-calculated and stored, when the corresponding data arrives, the stored total coefficients can be directly mu...
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The invention discloses multistage parallel complex multiplication processing method and device. The method is applicable for a condition that multipath parallel processed data need to be multiplied by a multistage complex multiplication coefficient, and comprises the following steps of: preliminarily carrying out complex multiplication processing on the multistage complex multiplication coefficient corresponding to each path of parallel processed data to obtain an overall coefficient, and sending the overall coefficient to a cache for storage; carrying out complex multiplication processing on each path of received parallel processed data and the corresponding overall coefficient stored in cache and then outputting result data. The technical scheme can save the cache space and has short processing delay time.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to a multi-stage parallel multiplication processing method and device. Background technique [0002] In the mobile communication system, in order to reduce the correlation between the antennas and the correlation of different spreading code channels and the mutual influence between the frequencies of different carriers, the baseband data after modulation, spread spectrum and multiple scrambling codes need more times multiplied by the complex multiplication factor. [0003] For example, in the TD-S CDMA system, baseband data needs to be modulated, spread, and scrambled, and then multiplied by the antenna gain of the corresponding spread channel, the antenna beamforming coefficient, the antenna calibration coefficient, and the corresponding spread Frequency channel phase rotation factor and cell carrier phase rotation factor. Equation (1) expresses this process: [000...
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IPC IPC(8): H04L25/03H04W28/14
Inventor 陈家国罗斌周志国赵天良汤国东
Owner 北京万海云科技有限公司