Fortunately, in the case SMT also the efficient polyphase structures that have been proposed in the literature, for example, [8], are such that the and blocks are moved to the output of the filters and and thus avoid the problem of loop delay.
Since the discrete-time filterbank can be implemented efficiently (e.g., using the polyphase structure), the sampling and reconstruction processes can be realized efficiently.
The discrete-time filters F ˜ k M w with the expansion operations construct a discrete-time synthesis filterbank or a multirate filterbank in the LCT domain, which can be performed very efficiently (e.g., utilizing the polyphase structure [28]).
We design a polyphase structure to achieve windowed DFT, which can achieve real time processing of the high sampling rate.
We show that the transceiver complexity may be reduced by utilizing an efficient polyphase implementation that is commonly used in the filter bank multicarrier (FBMC) modulation.
Both exploit the polyphase structure and the symmetry/antisymmetry of the filter and are evaluated in terms of area efficiency, speed and power consumption.
The PR-NMDFB contains an analysis filter bank (AFB) and a synthesis filter bank (SFB) whose efficient polyphase forms are named as polyphase analysis channelizer (PAC) and polyphase synthesis channelizer (PSC).
Therefore, although the higher the order of the polyphase structure, the shorter the polyphase subfilters, it does not necessarily translates into a lower number of CMs.
Again, we are dealing with polyphase networks that are replicas of a basic polyphase structure of order Nss, where mb 2 can be interpreted as a subnetwork index.
In this paper, we focus on the orthogonal uniform FB (OFDM/OQAM), for which efficient polyphase realizations are available[17].
