This paper presents a continuous phase modulation (CPM) coherent detector design suitable for high throughput, low power VLSI implementations. The key component of CPM coherent detector is the trellis decoder. Compared with the Viterbi algorithm, the sub-optimum T -algorithm significantly reduces computation complexity and provides great potential to realize low power trellis decoding. But it i...

There are several ways to use iterative decoding techniques with coded continuous phase modulation (CPM). This paper presents a method using parallel concatenation of convolutionally-coded CPM. All CPM schemes can be decomposed into a ring convolutional code and a memoryless signal mapper. This allows a properly designed convolutional code trellis to be combined with the CPM trellis, producing ...

Synchronization is a critical operation in digital communication systems, which establishes and maintains an operational link between transmitter and the receiver. As the advancement of digital modulation and coding schemes continues, the synchronization task becomes more and more challenging since the new standards require high-throughput functionality at low signalto-noise ratios (SNRs). In t...

This paper focuses on the noncoherent iterative detection of continuous phase modulation. A class of simplified receivers based on Principal-Component-Analysis (PCA) and Exponential-Window (EW) is developed. The proposed receiver is evaluated in terms of minimum achievable Euclidean distance, simulated bit error rate and achievable capacity. The performance of the proposed receiver is discussed...

Spectrally e cient Continuous Phase Modulation for a speci c narrow spectrum requirement mask and a prescribed information bit rate has been designed and analyzed in terms of the minimum Euclidean distance and simulated symbol error probability for the AWGN channel. The performance of a low complexity sub-optimum detector based on an approximate lter bank and a reduced state Viterbi decoder for...

Several concatenated and iterative decoding approaches are used to improve the power efficiency of continuous phase modulation (CPM). First a symbol interleaver is used for serially concatenated CPM (SCCPM). Convergence of iterative decoding for this scheme can be earlier (lower SNR: Signal-to-Noise-Ratio) compared to bit interleaved SCCPM. Then a ring convolutional code (CC) is used as the out...

This paper addresses the space–time code design for Rayleigh-fading channels using continuous phase modulation (CPM). General code construction is desirable due to the nonlinearity and inherent memory in CPM signals which make hand design or computer search computationally impractical. Several sufficient conditions for full rank are identified for CPM signaling schemes and for linear representa...

By using a pulse amplitude modulation representation of the binary continuous phase modulation signals, we develop a new optimum Viterbi sequence detector and a near optimum Viterbi receiver with low complexity. Also, for the modulation index 0.5 where a linear receiver can be used, a minimum mean-squared error linear receiver filter is derived. Their performance is analyzed. The Gaussian minim...